Having “less government” eventually crosses a threshold into having “no functional macro government at all”.

What you do after that threshold is entirely open ended.

I think that is where you leave what anarchists define as anarchism. It doesn’t end there, it’s not open ended. If you end up with some town or camp that is ruled by a leader and/or a priesthood and police force to keep law and order, it’s not anarchism. If you can own land and impose your vast property rights so others don’t have anything, you’re not anarchist.

Exactly how a voluntary collaboration of anarchists is supposed to work to avoid quickly growing small systems of power again (chiefs or warlords) I never figured out so don’t ask me. Best answer is that “because the people already overthrew the existing power structures they will have an easier time preventing future power structures”. So I think they assume the belief system is powerful enough so that once people are indoctrinated, they would reject any systems of control again. How such an indoctrination is achieved and maintained would be my next question.

Of course there are theories like anarcho-syndicalism. And I think in generally anarchism is understood as merely being of a mindset that any authority has to justify itself or be abolished, but necessary authority is not. So you’d still pay taxes for roads and schools.