I know we happen to be a minority, but given how much valve has done for linux gaming, I’m happy to vote and support them with my wallet.
For reference, before they started giving a good linux experience I didn’t buy games for more than 15 years, so is not like the game developers were going to get 100% of the money I’m paying for games now, the choice is to get 70% or nothing because I wouldn’t play their games. Not only that, if the proton compatibility layer fails, I’m very confident that steam’s refund policy has my back, again, without this policy I wouldn’t buy games.
Remember, not everyone is you, and not everyone plays games the way you do.
I recently moved my main desktop to Linux (everything else has been for a long time), and - aside from some problems with Wayland (due to NVidia) - everything has just worked. Every game I’ve played has been working flawlessly. They’ve been doing an amazing job with Proton.