system
A chat on subreddit /r/pcmasterrace
human
You are really reaching for using the word "reliable" to describe mentioned emulator layers. They just barely work and not with all games.

They have come a long way for sure but ot will take another 5 years for something better than windows for games to appear.

Also it's not all linuxs fault, game developers make games basically only windows in mind.
gpt
I use Linux my partner uses windows. The only games Linux really struggles with anymore are mmo's with certain anti cheat.  There are a fair amount of games that are native on Linux, which means they actually run better on it.

 With proton and wine there are very little modern games you can't play on Linux and the majority of new games run without a hitch. At least no more problems than windows can give you. 

It really appears as if you haven't tried gaming on Linux recently....