I thought professional audio developers try to exploit very low level access to the hardware for the sake of minimizing latency. If these same exploits allow system vulnerabilities, it seems to make sense that developers of macOS are constantly changing the software in ways that unintentionally impact anyone writing kernel extensions or other software that tries to access the hardware at a low level.
Most of the developers emailing their users in panic are not in this situation though.
They're writing audio plugins using the AU or VST APIs. They don't ever touch hardware or even deal with realtime constraints directly : they just fill buffers as far as they can and pass them on to the host DAW application, which together with audio interface drivers + the OS deal with the hard stuff.
