As you’ve probably heard, it’s basically just NVidia with shitty drivers. They are getting better but are not included in many distros (they can usually be added through the package manager pretty easily) since they are proprietary. Intel and AMD generally work out of the box for gaming. NVidia drivers are bad enough that I sold my 2060 for an ARC a750 just because of the drivers lol.
And bullshit! Though, a Nintendo switch running LineageOS would be a very different experience compared to an iphone lol.