Only from the perspective of the person getting banned. From the perspective of the person paying the bills, you're paying someone to spend time explaining why you kicked them out, and then you're paying them to discuss the reasoning, and then you're paying them to discuss the reason with hundreds of users that don't think there's anything wrong with calling someone [some word].

Not only that, you're doing that to satisfy the curiosity of someone you've decided you don't want anywhere near your site. I'd be on board with your line of argument if it involved a payment of $X to cover out-of-pocket expenses and the hassle of dealing with BS.