Because lord tony hasn't done anything bannable on this current account, it's not hard to figure out
He has had 10 accounts, atleast, over the span of 10 years. They all get banned for the same thing, trolling.
He has been doing this almost uninterrupted for roughly a decade.
If you want a precedent for a similar BoS, there is Taboo, who had maybe 6 accounts or so, and was banned for flaming/constantly arguing over the course of about 6 years.
Taboo was made BoS for this.
The big differences between the two is that Taboo hardly trolled, he just argued and got rude. Taboo didn't make several topics everyday just to continue arguing. Taboo didn't start stuff-smearing campaigns against people he disliked. Taboo didn't try to provoke users into confrontation by changing to their avatar or adding them to a public list. Taboo didn't get his cronies to pick on his enemies on his behalf. Taboo didn't generate 5+ Drama topics regarding himself/his clan/his enemies every single month.
If Taboo was justifiably made BoS for being a repeat nuisance (which he was), without doing 1/4 the stuff Tony does, then it is entirely justifiable that Tony should be made BoS as well.