I switched my gaming PC to NixOS a few months ago, I couldn't be happier. Other than a few games that also had issues on Windows and VR, everything I run through Proton just works.

I also own a Steam Deck, which is a wonderful little device and it proved to me that I could safely go through with this switch and not lose access to much.

Congrats to both the Proton and hardware team at Valve, and the people who contributed to Wine; the Year of the Linux Desktop has come, as far as I'm concerned.