You quoted the appeal-part of my comment. I would understand if a bot is implemented to suspend users with usernames which is just a generated string of high entropy, like my own. But rejecting an appeal should not be an automated process.
I can’t imagine that the automated ban helps a lot either. Generating random usernames which looks like real people’s usernames is pretty much a trivial task. Using a high-entropy string is just a choice on the developers side.