Are you sure you’re not misunderstanding the quoted section? To me, admittedly not a lawyer, that reads like “Apple has to allow Netflix to say “hey, you can get this cheaper through this other button that is different than the Apple Pay option” without charging the developer for that “privledge”” while you seem to be taking it as “Apple has to allow third party payment without taking a cut.”
This is what I’m talking about. If there is any ambiguity, their lawyers will pounce on it. Even if it means they get a slap on the wrist, they can turn around and say “oh, sorry, the legislation wasn’t totally clear we will get that fixed real quick in a year, these things take time after all.”