I've been gaming on Nvidia cards since I switched over 3 years ago and only had a few issues.

On initial install, the opensource nvidia drivers wouldn't work - I had to go into the terminal and select the proprietary ones. That's pretty much it, really. Other than that, I've had about the same amount of issues with AMD(integrated graphics) and Nvidia.

On the plus side, Nvidia has a nice little control panel. It's basic, doesn't have all that GeForce Experience stuff, plus there are command line utilities like nvidia-smi(basic info) and nvtop(temp, clock, usage, memory stats). AMD doesn't have a control panel, that I'm aware of.

As far as distro, I'd say just chose the one you're most comfortable with. I don't think there are any huge differences between them concerning gaming performance.

@pleasemakesense > Are my fears unfounded/outdated?

They are mostly outdated. Nvidia works just as fine as amd does

I have 3060 Ti and have had no trouble. I even used it with Arch and Gentoo, and all I needed was installing the drivers (the package manager did it) and it worked out of the box.

Running KDE Neon here, my Nvidia experience has been faultless, adding the PPA and installing the drivers is reliable and straightforward. Wayland works acceptably, but running a single 4k 27" monitor X11 works perfectly, so at this point in time I see no reason to swap to Wayland - I'm sure in time I'll adopt Wayland, I'm simply not quite ready to drop my ability to create custom fan profiles using GWE just yet.

Nvidia X Server settings are nice, as is nvidia-smi.