That's what I said: that they got a special exemption (which is not part of ARM's official license offering) to allow them to do this for embedded use cases (iO

That's what I said: that they got a special exemption (which is not part of ARM's official license offering) to allow them to do this for embedded use cases (iOS devices), which implied that they wouldn't be documenting or having other people use these instructions. The problem is that the M1 threw a wrench in the works because now suddenly running non-Apple code that can use these instructions is allowed, and everyone else can see that they exist, so suddenly the existence of that special exemption is public.