Just not true. We got a reconditioned laptop with a “NVidia upgrade for free” when we order Intel for a reason. My advise was to return it. This was ignored. Regardless of open or closed, Wayland or XOrg, graphics doesn’t work flawlessly. It’s a case of choose your bugs. The least bugs is XOrg and closed, but it’s still not prefect (artifacts with window shadows sometimes). Switch to vtty and back a few times and it will poo itself. Slowly.

For nearer the edge distros, like Debian Testing, NVidia is pretty much guaranteed to break completely.

Closed drivers just don’t work in a open system. They just don’t keep up.