> That isn't how wages work. If someone can do the same job for less, they will and you will not get paid.
Sure, but recognizing that is what happens is important for both not patronizing businesses which give their workers the worst deal allowed by law and support for increasing minimum wages to match inflation.
> You can raise the minimum but then you make everything more expensive (the people who build the tractors get more, the guy driving the tractor gets more, the person picking the lettuce gets paid more, the lady trimming and repackaging the lettuce gets more, the truck driver delivering the lettuce gets more, the high schooler throwing the lettuce on your burger gets more...)
You're leaving out a key part: prices only go up for the fraction of those costs which are due to wages. For things like fast food, that's not a large component which is why, for example, a McDonald's worker in Denmark has a much better quality of life while the average Big Mac buyer is paying the same or less than their American counterpart:
https://www.economist.com/big-mac-index
Another big factor to consider is the cost of poverty. The working poor have less ability to participate in the economy so a certain amount of local economic growth never happens, and they're often worse off because they're forced to do things like buy inefficiently because they don't have the reserves to optimize. Paying people at the level minimum wage used to mean would allow a significant number of people to participate in the economy more effectively and we've never regretted growing the pie.