Then everyone gets to benefit, no? All developing nations have far lower wages than the west, but that's often offset by lower living costs. But try to buy something out of the international market and you'll quickly feel envy. If there is an issue with higher wages then I don't see it

No, it isn't distinct from inflation. Higher wages necessarily means increased cost for product, leading to an overall increase in cost.

This is exactly what inflation is.

FWIW, I think you have this exactly backward. It’s higher incomes at the top that drive higher incomes at the bottom. Low skill workers in developed countries make more because they are part of what is essentially a labor cartel: there are certain jobs which can only be performed by, e.g., an English speaking person who understands the American cultural context and who is physically located in America. And restricted immigration and language barriers prevent competition from new entrants. So as more people are pulled into high skill, high pay work, incomes for even low skilled people go up, because their competition decreases and overall wealth in the society, ie wealth available to pay for their time, increases.

"Raise the bar at the bottom and all wages will go up"

The people at the bottom might be making more, but they won't have spending power for very long because the cost of everything will go up. This cycle will just continue forever, unless the government starts fixing prices, which never leads to a good outcome.

When fast food workers wages are raised, we might see a few dollars more for meals. When you raise the wages in every other industry, it has a cascading effect. Just look at the number of jobs between products on the store shelf and how it gets there. Delivery, trucking, packing, shipping, etc. In this one example, it would raise prices 10X.