All Apple will need to claim is that Asahi is bypassing some "client side protection", and Asahi is shut down.
If Apple wanted to kill Asahi Linux, they could just remove this functionality from iBoot.
Apple will not remove this functionality, because they would not have added it in the first place if they did not want people to be able to use it.
Is Asahi bypassing some client side protection?
All Apple will need to claim is that Asahi is bypassing some "client side protection", and Asahi is shut down.