Mind you, I'm not saying that we should tolerate such folks, either; and once you get past their tiresome, narcissistic self-aggrandizement, it's not like they have anything worthwhile to say. But that's a different argument than Popper's; it assumes the existence of some minimally basic ethic of thriving, and says that no, you can't aim to destroy the world around you even if you would be quite OK with everyone else doing it back to you in return.