Virtually everything non-anarchists come up with in their imagined terrible outcomes were anarchism to take root more broadly, are things that are actually happening right now!! Under colonialist, capitalist, authoritarian nation-states.
"But cults of personality!" my guy, I've seen how you lionize politicians and political parties. "But unchecked killing!" have you noticed cops, drone strikes, an endless succession of fucking genocides??
It's telling that almost any anarchist bogeyman they come up with already exists without anarchism. It's the horrific status quo that anarchists want to stop!