I can only speak for the desktop, not laptops, when I say it works perfectly on Gnome and KDE and even Hyprland which doesn't even officially support Nvidia hardware. That said, for the first time in two years I started having big issues with a few games (though, I don't play a large number of games so take this with a grain of salt). Right now, I have an xorg session on the side to play those games. Although, I'm starting to notice it's missing some things from Wayland that I've gotten accustomed to.
Wayland is expected to get much, much better when the 555 drivers drop explicit support in May and when proton enables the wine wayland drivers.
My experience with Nvidia had been mostly seamless (although, laptops could be performing worse) up until recently when everything started bursting into flames. Electron applications are nuts, steam store doesn't even render, multiple game broke down fully. I can't even find any other use reports.
Well, they can't. I have an anonymus account only for youtube that I access only over the VPN with adblockers.