Rapedollar said it to best one time:
If you believe someone is hacking, get your proof and ban them. In the event they weren't hacking, they are unbanned. No problems. But if you just record a demo of a hacker, who is legitimately hacking, than he just terrorizes the servers until someone does something about it.
Yes it can be a minor inconvenience, but you gotta give a little to get a little in return.