Who cares? I spent about $20k on my Mac Pro, but I was able to use 3rd party ram, third party NVMEs, and through in a 2080TI for the windows side. I'm not asking apple to release a new card, I'm just asking them to sign the drivers that Nvidia has developed.
Perfect example of an idiot move that Apple loves---if they can't provide you with the tools you need for the job, why on Earth do you fork out so much cash??! Apple is laughing all the way to their offshore bank with that attitude: spend 20K with us, then turn an over-priced under-performing thing you bought into a plain old Windows box that would've cost you a fraction of the price had you been intelligent with money! Lesson: quit following the cult and buy the tools you need!