That's because Steam/Proton has mostly solved this (with some qualified notorious exceptions), which used to be a real problem even just a few years ago, but not remotely as much these days; the meme is mostly outdated by now, I've lived both cases and it used to be a pain but these days? people are spoiled by Valve and many have never lived the OP situation (which is great news!)
Obviously I can't speak for everyone, but personally speaking I've had no issues playing the multiplayer games I play, which (in my particular situation) puts me above at least one of the windows users in my group
Installing things not through steam can take longer sometimes, but I always made sure to do that ahead of time anyway