@BeAware
It's unethical Admin behavior, in my opinion, to shadow-ban.
I think I'll put a note about this in the "About" section for my instance to describe that Admins and moderators here are forbidden to shadow-ban (limit, silence) any account without notification to the account owner, a policy people should be aware that is not in effect on all instances.
Trust must work both ways to have an open working Fediverse.
I guess my only exception is that Threads accounts are all initially limited by default, and the limit is lifted on a per-Threads-account basis. But, this policy is made clear in my About section as well.