Ask Lemmygrad

I would argue it's almost communist, though it did not come to this part thorugh marxist revolution but by capitalism dissolving after heavy destruction of capitals and capitalists in WW3 and then alien tech transfers propelling humanity to postscarcity before capitalism managed to redevelop globally - or something like that, the process was never described in lore.

Federation as described clearly seems to be moneyless and classless, though there are two problems. First is the obvious existence of government, though to be fair on a more local, planetary level those do seems to be more like just administrations Lenin mentioned than real governments, and the central Federation government is also seeming to at least follow the democratic centralism and its existence is clearly because resistance to neighbouring powers like Romulans, Klingons or Cardassians. Of course there is the Starfleet but its description as at most paramilitary force is correct, even after multiple wars in 2370+ forced further organisation into military, and Starfleet itself is clearly organised more like civilian agency. Also note there is basically no army whatsoever, the armed personnel shown is just Starfleet Security, the least popular and least prestigious branch of Starfleet.

Second are cultural differences between the members of the Federation, though it's also shown so rarily we can't tell much.

Finally, notable mention for Tellarites seeming to be ML's already way before Federation was formed.