This same tech can (and will likely) be used to find the owners of bitcoin and other cryptocurrency wallets, honeypot tokens, community identities, and to provide profiling information to the company's political masters. The collisions in the hashing scheme mean that you can insert anything you want onto peoples devices and get them pulled into the legal system once it is flagged, where the process itself is the punishment. The whole scheme is too stupid to ever have been about reason, it's just pretexts and narrative, and this is as good a time as any to exit their ecosystem.
Apple really picked the wrong time to attempt this, as I do not see anyone who understands how evil this is ever forgiving them. The most charitable thing I can say about it is that they're probably just doing it as part of a deal to avoid anti-trust plays, where Apple plays ball with the feds and its parties, and the storm just magically passes them over. The good news is running OSX made me lazy, and getting back into running a linux or freebsd laptop again is going to be fun.