To have this laundry list of negatives get a reply basically saying "yeah, it's bad, but we need to impress the stakeholders by forcing a Wayland default even if it doesn't work correctly" is baffling.
I use SDL so this hits a bit closer to home. Hopefully they can arrive at a conclusion that isn't harmful to us devs. It's already kind of a tossup whether it's even worth it to provide a native Linux build when Proton works so well anyway. I can't imagine this will help.
Warframe at 28 is nice. The devs acknowledge Proton and even accept bug reports for those using it. Very cool chart overall.