On a more meta note, this is an incredibly common and obvious answer to your question, and I wonder if it's even asked in good faith. If you've "yet to hear an UBI proponent explain" this to you then you really don't understand it at all.
On a more meta note, this is an incredibly common and obvious answer to your question, and I wonder if it's even asked in good faith. If you've "yet to hear an UBI proponent explain" this to you then you really don't understand it at all.
This is totally backwards. Better-off people have more disposable income and are less sensitive to price increases than lower-class workers are. For example, suppose your favorite restaurant raises its prices from $10 to $15 per meal. If you're a tech worker, you probably won't care and will continue eating there as often as ever. If you're an unskilled worker, there's a good chance you'll never go there anymore.
I don't know if you've ever worked with people in low socioeconomic strata, but I've been a camp counselor with some kids who's socioeconomics were such that eating off the dollar menu at McDonalds on their birthday was a big deal. I don't think Chipotle being more expansive is a material concern so long as actual purchasing power goes up.
I tend to think the minimum wage should be regarded as a moral concern - if you can't make enough to live decently then the line between effective indentured servitude and freedom is eroded, and this is dangerous in a society premised on the general welfare being such that each citizen has enough leisure time to be educated and vote.
But if you're trying to generalize the idea that increasing minimum wage would lead to an inflation death spiral because labor is too high a percentage of cost of staple goods... I'm not sure I buy it, though agriculture is definitely one of the industries most impacted by low cost labor (I don't know what they pay the folks crossing the border at 3 AM to pick lettuce in Yuma in 100+ degree heat, but it's not a lot). But my general sense is that the labor to harvest isn't most of the component cost of lettuce, there's transport, refrigeration, irrigation, pesticides, etc., so you can probably assume doubling minimum wage doesn't do anything like double the price of lettuce. If you believe that the labor to pick lettuce is 50% of the cost of lettuce, your worst case for a 2x wage increase is a 1.5x gain in the price of lettuce, which means the low end of the economy is getting net purchasing power growth, but more realistically, I can't imagine that picking lettuce is 50% of the cost, meaning low-end labor wage increases can't have near that much impact on prices.
My assumption is that the issue with higher labor costs is foreign competition at lower cost with lower standards causing a competitive issue and net less business more than it's an "wages increasing the price and causing an inflation issue." (IE the general "US must have 3rd world wages because otherwise it can't compete with the 3rd world" idea.)
But in my view so long as the increase in minimum wage creates an increase in overall purchasing power greater than any follow-on cost of inflation, it's probably net positive, and should be more efficient because the more normalized wages and living conditions are circa median income, the greater benefit to economies of scale and services and such for that group. Having too many poor and too many distinct socioeconomic bands is bad for the market because it means that the next model-T type product will be more likely to fail. So dealing with the issue caused by competing with lower-wage producers outside our boarders should be addressed separately. (For example, subsidizing US labor's wages by how deficient the living standards of competing labor is, or some other, smarter, plan, someone smarter than me comes up with.)
For that to be true, the price increase of goods purchased by the poor induced by the additional income would have to be a greater multiple than the additional income of the poor; this doesn't make any kind of sense.
Except their goods are going to cost more too now. Unless you're going to start proposing price controls.
I can't really see UBI doing anything except inflating itself away.
And even if the benefits are entirely "inflated away" in aggregate (which is extremely dubious given that UBI produces real economic value in terms of stability), that's just the aggregate effect. To take an extreme example, if the Fed prints 1,000,000 exadollars and distributes them equally, then yeah it's pure inflation, but it also massively redistributes wealth to the point where everyone is practically identical. Hopefully that example demonstrates that the effect isn't zero even if it's just "inflating itself away."
Finally, I object to treating this question in pure economic terms. We shouldn't be overly concerned with optimizing aggregate economic outcomes for society. Those at the top end can more than afford to give up some wealth, and those at the bottom are struggling to a heartbreaking degree. The utility function of holding wealth is not linear and if you're interested in increasing everyone's well-being then that's a fact you have to address.
That is because if you print exadollars then either the assets rise in value in proportion or beyond a certain point, implode, making the country as a whole poorer. That is because companies can no longer make money. Suppliers demand more anticipating further inflation. You then need to pass it on but may not be able to pass it on fast enough. Cycle builds upon itself.
Pretty soon, your currency is completely devalued and there is a robust underground economy. You run into shortages for essentials and have to introduce price controls. The poor get poorer. The rich get poorer. Good job.
Lebanon. Venezuela.
2. The wage of the burger flipper at mcdonalds might not contribute much to the overall price of a big mac, but the wage of the burger flipper plus the wage that was factored into the cost of the ingredients might.
Companies in America are incredibly top-heavy, and a more stable economy could emerge if those resources at the top are distributed down to the worker. If implemented properly, UBI could push companies to share more of those profits with their workers without affecting the buyer.
Additionally capital generates more social value when it circulates (when its being spent) vs when it is stagnant (when it sits in a bank). Even if things are more expensive, more people having access to things allows local economies to grow