I've got 8 subscriptions, the one I use most frequently is (outside of patreon for podcasts, and even then on a slow podcast week ala holidays) YouTube, probably more than all the others combined.
Task master, Qi, Richard osmands house of games, lcs, you suck at cooking, epicurious, binging with babish, 3 Mario Maker creators, 3 general video game streams, 3 video game speed running/charity streams, science communicators, language learning, and I haven't seen an ad in.... Shit... 8 years, (except when I YouTube on a work machine, or the two times I've gotten a new phone)
Apple is pretty notorious for building hard to comply with arbitrary rules for their walled gardens. When it comes to the app store they won't tell you why an app was rejected even if you follow all published rules... there are other rules they just don't tell us about.
When it comes to developers Apple is a real shit-heel company.