Darn, ran out of time and had to write this all over again.
Do you have anything that suggests this is a bug. I haven't seen anything and you haven't suggested anything to support your point of view. On the other hand, the reports that I'm seeing suggest it isn't and that it is an account or server based issue.
Aside from the numerous posters who report account setting changes have resolved the issue, some of which have been posted in the very threads you have posted your bug statement in, I've seen reports of users with multiple accounts on the same Apple TV where the problem only occurs on one account. Then there is the timing to consider, the latest software was released a few weeks back now and these reports only started a few days ago, this suggests to me at least, that it's likely to be something introduced server side in the last few days rather than an issue with the software itself.
The problem with an 'it's a bug' post is that a software bug can only be fixed with an update and that will encourage users to just stop trying to resolve a problem. This doesn't help them, it doesn't help me since solutions stop getting posted and I can't collate them, which then doesn't help others.
If you must post 'it's a bug' all over the place, at least make it known that this is your opinion and add anything you might have to support it. I have my own opinions, which I'm slowly adding to the posts I make, but I do make it clear they are opinions and leave the reader to judge them for themselves.