I don't think that accurately depicts the situation.
> Apple has threatened to remove creator platform Patreon from the App Store if creators use unsupported third-party billing options or disable transactions on iOS, instead of using Apple's own in-app purchasing system for Patreon's subscriptions.
This happened because 5 years after Patreon published their app, Apple decided they were now due a 30% recurring cut of "indie creator" revenue. And that's ignoring that they did this while under court order to allow external payment options. And we've seen them try to force IAP purchases and subscriptions into WordPress, to Hey, and other apps too.
https://finance.yahoo.com/news/apple-says-patreon-must-switc...