I wonder if the procedure can be avoided by installing ACE from a different volume? (Update: A quick look with Pacifist suggests that it can't be done.)
That would be a quick way to render Big Sur unbootable. It has to be
inserted by the installer then there is a routine that is automatically run from the Recovery Assistant that I believe patches the boot image. I didn't mention it because it required no intervention or interaction on my part.
I couldn't even find ACE in the Audio Hijack package, and I'm still not certain that it isn't actually a d/l.
At any rate, I guess the procedure can't be avoided, which may tend to be a major PIA down the road, because, at least recently, ACE has had to be updated with each AH update.
