I'm not saying that "blame the scammer for ruining the real Bloodbath's name" is wrong. What I'm saying is you can't consider the other names that the scammer dropped are also scammers. I've checked the screens and I've only seen l3l00dl3ath pm this guy. The other bloodbaths didn't contact this person at all. The l3l00dl3ath guy dropped the other bloodbath's name and that's not enough reason for the other bloodbaths to be dragged in this.
This is like someone copies your name. Ex: Ak1maru, this person then scams someone and tells them they're Akimaru. That doesn't mean it's true.
As for your screenshot with cookies, this is again rumors. Unless cookies can provide legit screens of the scam then I don't see a reason to blacklist this guy. You can blacklist l3l00dl3ath but for the rest there's not enough evidence.