I'm so torn about valve. It is after all a proprietary platform. I use it since always and have hundreds of games and just know they'll all be gone at some point in the future. No word about making steam client open source, not even talking about something like decentralized proof of ownership etc. (For obvious reasons)

That said: they do incredible work for Linux. Their games have been Linux compatible since ages! And actually play well on Linux. Their client works flawlessly. And what they have done with proton is just flat out incredible. As you say Linux gaming is awesome currently and has not been that exciting for a long time. In short they do awesome work, I'd just wish they were a little bit open sourceier.