You could easily use this same logic (if you can’t afford the tip don’t eat out) the other way: if you can’t make enough in a tipping profession when someone doesn’t tip don’t work there.

Tipping is also highly biased, good looking people get more. There are racial aspects. The whole thing sucks.

I’m ok with tipping for performance, tipping as expectation is terrible. All of this is stupid anyway we should be taxing wealthy people and making the world a better place for all.