That’s true, but not working on Mac for a high end sound card is pretty catastrophic. I can’t think of any reputable brand besides maybe Antelope that has ever been straight up broken like that for any significant length of time. There would be riots on the audio forums if UAD or Motu or anyone else had that happen. I’m not an apple apologist, I use a PC for music production, it’s just surprising to me is all. I’m curious about what sound card it is so I can either avoid it or dig deeper into why.

I also think some of the comments in this thread about audio people never upgrading are a little dated. Maybe 10 years ago it was more common for someone to sit on an ancient version of Protools if they were a full time studio, but most of the market is hobbyists and semi professionals who have a single personal MacBook or PC that they use for everything, not just recording. Airgapping something like that isn’t really an option.

MOTU drivers didn’t work for months when some recent macOS came out. I think it was Catalina.

Audio people “never” upgrading is a bit extreme. But it is still extremely common to delay updates until you know that your gear works with the new OS. We’re not necessarily talking about some ancient version of Pro Tools here, but maybe a couple plugins you use that are getting long in the tooth. Maybe you would like to upgrade them, but you’d need to pay.