Can you use HDR in KDE? Only desktop
Can you use HDR in game? Only with gamescope with dozen flags
Can you use native wayland in proton? No unless you go through complex hoops.
"Finished" isn't worth a jack shit if it doesn't work out of the box
Basically as tall as tallest mountains - 8km before gravity starts overcoming the materials. Using stronger materials would allow building higher, but not too much
In short, you shouldn't drink hot water from open systems (popular in UK back in the day) or from boiler that doesn't have a periodical disinfection program (hetaing to 90C once a week)
Microplastics are the least of your concern in these houses. Dual tap design implies open hot water reservoir with things living and dying in it. (it's dual because law forbids connecting undrinkable water to drinkable water systems)
The rumour is nonsense and Valve isn't making a console with a 9070
Valve isn't making a console, but independent OEMs definetly are. There were branding guidlines released by Valve some time ago. It looks like Valves plan is to maintain the operating system, while everyone else is making hardware running it.
This seems unlikely considering it's designed as 5070 competitor