Perhaps look at it this way: I'm pretty OK with paying 30% to not pay 200% and, kinda more importantly, not to feel upset and angry later for forgetting a dark-patterned subscription dinging me again. If that's an edge case, y'all are wrong.
Maybe Apple can straitjacket them properly. "You must use XYZ API in iOS/MacOS and you must support one-click cancellation via a standard process." But I think the dark-pattern farmers who are angry about this would be angry about that, too.