So, I never said Proton was perfect or that it works with every game. I also mentioned Proton as only one of several technologies for playing previously Windows-only titles on Linux.

I get where you're coming from, and I have had my own frustrations with Proton in the past. With that said, even some native Linux ports have been problematic (Rust, 7 Days to Die, etc.) so it's not just Proton itself with the issues. Overall though, my experience has been overwhelmingly positive lately, and certainly far better than it was ten years ago.

I would say if you want to play games on Linux that are not official you will need to be prepared for some reading and trial and error, do you disagree ?

I didn't have to configure a single thing to get excellent and bug-free performance on games like Witcher III and GTA V, and a host of others too.

It is also true that some games are supported by Valve and they should just work.

But there are more games that don't "just work" then games that do. I would prefer to the community would be more honest about it, like if you want to convince someone to try Linux and you show him that his preferred game is "Platinum" or "Gold" but the reality is different then the Linux community will become even more of a joke.