Unfortunately well-written native macOS desktop software (Apple's own apps are sometimes exceptions, if we ignore monstrosities like the Music app) seems to be dying (new "desktop" software often being a wrapper for a clunky web app), while half of my Steam library that used to run on macOS no longer does. (And removing Rosetta2 might kill the other half.)

A subset of Rosetta 2 will be kept around for game compatibility iirc. Don't know what it entails or how it would work though

I am crossing my fingers.