I occasionally have to right click a game and enable the compatibility in the settings - that's just a single checkbox. Steam handles the management of pulling whatever the most recent version of Proton-GE is for me and everything pretty much works. There's a setting in Steam itself that you can set a default compatibility tool.
The only games that do shaders preload are Marvel Rivals and Monster Hunter World/Wilds, and even those are quick and can be canceled if I cared to. Even modding is fairly straightforward using something like r2Modman for Steam games or Prism Launcher for Minecraft.
If that's too hard for some people then I bet they also don't run adblockers, which means I've written them off as actually knowing how to use a computer at the most basic level.
I'm waiting for that to go away before I consider the jump. I figure there'll be enough people sick of that behaviour it'll get sorted.