There is definitely more to this. Nvidia graphics cards were having issues with power and possibly overheating, which I believe was the original reason why the beef started between them. High failure rate or something.After that apple switched them out for ATI, until monterey where wouldn't bother to even put the old driver in there so Nvidia based mac can use them.
I remember upgrading to Monterey OS and the performance was terrible. I had to get the available and video driver from their website... thank goodness there was one available.
Now I need to move that machine to Catalina, and I'm still not sure that there is a driver for it. If apple cared about its users over everything else, they would have made sure that Nvidia based macs weren't left out to dry. No graphics acceleration at al...l and Apple did nothing about it. What a bunch of Jokers.