The Nvidia driver has very good performance, and for most usecases it's.... Fine. But it does bring extra hoops and issues. There's a reason many distros have started to ship the "normal ISO" and the "nVidia ISO".
The nVidia driver also uses kernel modules, which can interfere with secure boot.
And many modern features are developed for Wayland-only: Mixed refresh rate, mixed fractional scaling, HDR etc. And nVidia is behind on Wayland support, since they only recently decided to cave on and use the same pipeline as AMD/Intel instead of their own.
It's hard to write and hard to read. The forced joining of every single letter in a word quicky makes it unintelligible unless your handwriting is perfect or you write very slowly