Yeah, if you're trying to get rid of a mafia, you don't get rid of all the minions eternally, you aim for the top. That way you get rid of the whole thing at all.

[It's that simple, even though it's not like the person who caused all this is a magical solution to this many-worlds-involved problem]

If after dealing with the source the Noise stuff are still trying to destroy the worlds, then we deal with them. I know there's danger right now, but I want to take the risk.