Sounds like they will warn you about your storage limit for a while, so you can choose which data to delete to be under the limit, before deleting your data at random to force you under the limit. Quite reasonable.
You mean Apple? I don’t think they actually delete any minor excess data that may occur incidentally due to race condition or eventual consistency. Just if you actually downgrade, they do… After a month or so, during which you can still download.
