Holy cow, how is this acceptable to any app developer or software company? This is reason enough for me to never use Apple/Facebook/Google sign-on as a developer -- huh, or even as a user. Apple/Facebook/Google could lock out all your users and literally destroy your business in a split second for an arbitrary policy violation, without explaining why, with no way to contact a human being. Haven't we seen enough HN headlines where an independent developer or a small software company is begging for help because <LargeCorporation> canceled their account or locked them out of something with no recourse?
EDIT: I know that AnyList is dependent on Apple's app store. This is still no reason to give Apple (or Google or Facebook) even more power over you.
Which is their right of course, but at the end of the day it means we get changes like these in the fine print. Gatekeepers like Apple and Google gain more control over what is allowed on their platforms, and subsequently what is allowed for the majority of the population to see.