Lolwut

why is everyone blaming MWLB? They don't even have banning privileges. They are just glorified reporters. The GMs still do the banning.

Sure but for all we know the real GMs could get lazy and just go along with whatever the MWs say without checking the evidence, but make it a temp ban just in case.
I can't see anyone wanting to review hundreds of frap files every day, especially since Nexon begrudges every minute spent on customer service. If they can't be bothered actually reviewing the evidence against people who submit tickets claiming they are falsely banned, then the are not going to be bothered reviewing all the cases the volunteers submit.