I mean there are a lot of broken weapons that are currently allowed, we just play with a bad whitelist imo. However the argument that the weapon isn't op because only a few people use it just isn't sound logic. When the cowmangler was unbanned only a few soldiers used it, and im pretty sure all the best soldiers in europe didn't use it (in matches) like 7 or svift players. A few prem players used it (me yllen ubrs feeling from s26, thats 4 out of 16), it was definitely a minority. The weapon was still just straight up broken, unlimited spam in a game all about spam sounds good to me.
You could make the same argument with the winger, if its so good why doesnt everyone use it, pretty sure a lot of NA scouts don't (of course winger is more used than mg, but you get the point). I still think a weapon that 1 shots almost every class in 6s is probably too good, even if there is only a handful of soldiers that use it.
I dont know what to think about iron bomber to be honest, im just so used to getting fucked by demos at this point i don't even realise when it happens. It would be nice to play with iron bomber banned and see if it makes the game more fun for everyone else (also the rollers are so probably op).