Which is inherently anarchist :P
As it seems a common confusion in this thread, I repeat, anarchism doesn’t have to be without government or rules, several forms of anarchism are focused on not limiting individuals freedoms and/or not allowing power over eachother (while accepting government and rules not contrary to that). Both of which I believe describe how the Federation works.
Precisely, so the Federation may be anarchist, even though the member races aren’t.
With what we know about how the Federation interacts with other races and planets, real world logic would indicate that the humans could be (and live) the model that the Federation is built upon.
All this is conjecture ofc, and is probably as much an exercise in understanding post-scarcity anarchism as possible Star Trek lore :p