And so, this is what Proton was for. Hope this is a success, as the success of Linux as a gaming platform is strictly linked to the success of this. It does look very appealing: it could become a Switch with the whole PC library available. Damn cool.
But now with Proton most problems I have are caused by hardware/driver incompatibilities. Which is exactly what Valve can get rid of by launching their own hardware which is actually built and tested primarily for Proton. That's why I'm really hoping this takes off. I'd honestly have preferred a stationary device, but now that the Switch is the only serious portable console they might be able to build a market there. Especially as people can just keep using their Steam library.