Cory Doctorow answers this in his book “The Internet Con”. IBM fought with DoJ for years. Today, it’s a felony to mess with anything locked down (anti circumvention)
Rooting/jailbreaking have had exemptions for many years now, on a three year basis which has seemingly been continually renewed, by the Librarian of Congress.
Exemption to Prohibition on Circumvention of Copyright Protection Systems for Access Control Technologies (2024)
https://www.federalregister.gov/documents/2024/10/28/2024-24...
He wasn’t convicted, so that’s not been proved to be against the law in this case, so it doesn’t support the argument you’re advancing in this thread.
It's not your phone, it's theirs. They're just letting you use it, and only if you're a good boy who follows all their policies and terms and conditions. Subvert this in any way and it's a felony.