It is easier to ban the new member than it is to keep the regulars in check. When a new member is making too much noise the routine is for 6 to 8 regulars to engage with argument with the new member until a four letter work comes out, then Volvo will call the police and ask to have the new member banned and the thread closed.
Recently a new member came here to talk “shop”, the others weren’t on the same level and the new member was banned for 1000 years for being argumentative.
There is that one guy who engages in argument every week, most regulars know to ignore that guy.