I can imagine if someone looked at the list of banned users, not only would it be amazingly long, but the username who set the ban would be the same through the list. Also if you added up the reviews and posts from all the banned users my guess is that it would be a number that is significant related to the total posts and reviews.
There is a saying we used to use in Army, "when the only tool you know is a hammer, every problem looks like a nail". Clicking the LIKE button is a ban? Answering a question is a ban? Joking around is a ban? Not reading one of the fifty "extra" made-up rules listed in a pinned post in another forum is a ban? Is jaywalking a ban too?