I don’t think we need to change anything. As stated being a Follower or not does not change access to
content at all, which can be viewed readily with a bookmark or search.
There are rules for the site and methods to flag inappropriate and/or malicious behaviour for action.
If it is changed/removed, I’d almost put a bet on a thread appearing not long after asking for the feature to be reversed because of X other problem, or “I just accidentally removed my followers, how do I get them back?”
In this case, asking the person to un-follow directly through PM (rather than broadcast the request through the forum?) and if they won’t then go to the admins/moderators with context for why that’s a significant problem.