If Apple decide to usurp the equipment you have paid for, have your processing power surveilling the contents of your devices, where then end to end encryption will mean nothing, then its a bad day for apple and a bad day for real privacy. ON DEVICE surveillance which is what it is, whether you want to couch it in terms of some moral compass, which is obviously the attempt Apple made previously with CSAM and dropped after widespread concerns from industry experts, then to have ON DEVICE being used at all, is a very slipper slope indeed, giving the opportunity of a back door to your devices, after rendering end to end encryption useless, because its ON DEVICE surveillance. Even if it suggests it can be switched on or off, history demonstrates that often means nothing.
Ask Chinese citizens why their privacy is impacted by Apple devices, with Apple cooperating to China's wishes. Apple/Google/Microsoft can do what they like with the equipment THEY OWN, they can check whatever they like, but OUR DEVICES SHOULD BE SACRO SANCT. This is just another attempt at ON DEVICE SURVEILLANCE.
Apple can bleat about upholding privacy, but ON DEVICE SURVEILLANCE shows that to be not the case.
if I buy an Apple product, I own it, and it should not be for Apple to decide how processing power is used, nor be able to act as surveillance on whatever they like, because sure as eggs is eggs, these types of situation are always brought in on the basis of some moral basis, but which opens the door, or rather opens a backdoor for multiple organisations, and governments.