When this is the case it’s nearly always a missing library the game (or steam?) didn’t declare as required, ime. If you start the game from the terminal you can usually figure out which library it is and get it up and running, tho it’s usually easier to just use proton
…did we read two different articles? The only link I see is to Mozilla’s own blog, explaining their choices in a relatively positive way. I’ve seen the effect you pointed out a lot, I just don’t see it here.