If you think socialists like Noam Chomsky agree with the ideas of Libertarians you don't understand much about either. Chomsky is a libertarian socialist, which is a school of thought that is soundly rejected by non socialist libertarians.
Your argument is no different than saying that Democratic Socialists who believe in elections are the same as conservatives who also believe in elections. Obviously they don't have the same beliefs, even if they agree on some things like having elections.
The list of truly radical leftists that are libertarians is very long.
Noam Chomsky adheres more to the true libertarianism, not this newer version that embraces the left, except for it’s economics.
That is why libertarianism is so silly, it is really a bunch of childish nonsense for some fringe whack cases.