Yeah I'm pretty sure Nvidia just doesn't care to make Mac drivers. For years there was no SIP, Apple sold the Mac Pro which could take Nvidia GPUs, but you basically couldn't use Nvidia because of how bad and outdated the drivers were. I had a GTX 650 in my Mac Pro for a while, it was borderline unusable.
Yeah I'm pretty sure Nvidia just doesn't care to make Mac drivers. For years there was no SIP, Apple sold the Mac Pro which could take Nvidia GPUs, but you basically couldn't use Nvidia because of how bad and outdated the drivers were. I had a GTX 650 in my Mac Pro for a while, it was borderline unusable.