Still doesn't make any sense. We all know how the tipping system works, it's fucked but that's not the point here.

A fixed % of a restaurant bill in the 70s, 80s or 90s should give hospo workers the same amount of money adjusted to inflation so if 10% was good enough money then, it should be now too.

Hell, I could argue that prices have gone up at inflation rates (that's pretty much the definition ofvinflation) while salaries have remained stagnant, so a fixed % of an inflated restaurant bill makes hospo workers the only ones that actually have their income adjusted to inflation. Everyone else (salaried) gets a well below merit increase year on year. And that's even before you take the socially accepted tip from 10% to 25 or 30%