TBH, no it doesn't make much sense. How do you enforce this? What kind of precedent does this set? Will other hardcore fandoms become targets? Would people feel differently if this were not about ICP?

I'm not saying I like ICP - I don't, I think the whole thing is stupid, but I don't see this as anything but a slippery slope. Go after the individuals who are causing a problem - as you pointed out, any big organization or fandom or group will have bad apples. We cannot label them all gangs.