I wish this was absolutely true.

Then, it would be easy to abolish the state.
However, humans need an organizational structure to operate in.

A neighboring tribe comes to say high, well, the "leaders" usually get together first, and then discuss all the circumstances.  Having everyone there in that meeting is often difficult, but also tedious.  Or basically creating treaties.

Another piece is arbitrating between two people of the group.  Not all agreements can be worked out strictly between two people.  So a person who is considered wise by both people is sought to arbitrate.

These are structures, and what is considered the "state".

Things that people who claim themselves sovereign suddenly find themselves responsible for handling.

And, it is these things that have to be put in place first, as an alternative structure, before you can kill off the old state.