So the Troupe decided to become the worst villain's the world has ever known in order to protect Meteor City. This actually aligns with that event mentioned in York New in which members of Meteor City bombed a bunch of places in revenge for the unfair death of one of their own.
They want to be so scary that no one ever dare think of incurring their wrath, lest they face pure desruction.
This has been a brilliant run of chapters so far but I should never expect less from Togashi.