No, that’s just how they’ve chosen to handle them to keep their unofficial “safe harbor” status since net neutrality is dead.
https://www.eff.org/issues/dmca
https://en.wikipedia.org/wiki/Digital_Millennium_Copyright_A...
> DMCA Title II, the Online Copyright Infringement Liability Limitation Act ("OCILLA"), creates a safe harbor for online service providers (OSPs, including ISPs) against copyright infringement liability, provided they meet specific requirements.