Earlier quoted context omitted.
It would be, but Apple’s way is also way more user friendly than almost anyone else’s. Also, the opt-in vs opt-out could be configurable.
Opt-out is by definition not more user friendly than a default opt-in process. It is in fact quite user-hostile and is used by a number of scam companies.
Opt-out is only user hostile when it is used as a scam. Whether it is hostile depends on the implementation.
Apple’s implementation is a friendly one. Firstly there is an email confirmation with a link to cancel, and secondly there is a single screen with all of the subscriptions aggregated and cancellable.
If you are someone who generally purchases subscriptions to things you actually want, then opt-out is clearly more friendly.
If you are someone who likes to try a bunch of stuff but isn’t likely to want to keep much of it, then you would likely prefer opt-in.
Whether a given implementation of opt-out is a scam or not is orthogonal to whether it matches your personal style.