If GNOME can tank the kernel, it ain't GNOME's fault.
I really hope that with KDE 6 I can finally switch to Wayland!
I'm using KDE on Debian 12 with AMD GPU with Wayland, and works. it keeps being a bit annoying compared with X11 with a few programs (Eclipse, Dbeaver... I need to launch both with flags to not use Wayland backend). But even I can play AAA games without problems
I'm definitely not against better hardware support for AI, but I think your problems are more GNOME's fault than Nvidia's. KDE's Wayland session is almost flawless on Nvidia nowadays.