You are talking without any proof, the only reason why Absolutezero got banned once was due to doss from Noneeddruid who were envying him, making it like he alt-f4 in arena but he did not, link the topic where he got banned for any other reason?
I searched so far in and couldn't find a topic where he got banned for abusing a bug except the one(scenario made from Noneeddruid) I mentioned earlier.
Absolutezero is the only person who was able to hold rank 1 since the beggining of this server, few people calls him bugger but they don't even know what he is ''abusing''.