Anti-authoritarianism is not being 'anti' authority (because anti-authoritarians are very keen on imposing their own authority).
Anti-authoritarianism is actually 'anti' stable and ancient authority.
Anti-authoritarianism is in favour of new and unstable (changeable) authority.
All instances of actually existing authority thereby become arbitrary, hence unreal (because the real is stable and ancient).
Anti-authoritarianism is therefore in favour of the unreal.
So - following the triumph of anti-authoritarianism - all authority (including the authority of the champions of anti-authoritarianism) is regarded as presumptively arbitrary, recent, temporary, and unreal.
Is it any wonder that anti-authoritarianism inevitably leads to chaos?
And that, so long as anti-authoritarianism prevails, order cannot be restored.