I had a disturbing thought while writing sth else...
Obscenity laws only apply to broadcast TV and not cable because of the idea that parents can't reasonably stop their kids from going to the store and getting a TV or antenna. Cable, on the other hand, requires contracts and an installer and etc.
Well, in the 2020s, I'd say it's easier to sign up for pay cable on a mobile device than to physically buy a TV. Cheaper, too.
Under that rationale, someone could argue for censorship on pay cable