Not a huge trek fan. Watched some TOS in syndication in HS. Watched disco, Lower Decks, and started Brave New Worlds recently. The only government I can really recall are tribunals and starfleet which seems to be a council. Do they often talk over overarching Federation government proceedings? I mean, it's definitely a utopia if just for the post-scarcity.
It’s a bureaucratic nightmare to maintain the utopia tends to be the big flaw. And they’re ideological to a fault, but are also willing to look away while stuff gets done for them unethically.
Not on the scale of Star Trek, where advanced technology such as replicators allows them to create food out of waste through atomic recomposition. Modern-day communist societies such as the Soviet Union are plagued by hunger and starvation. https://en.m.wikipedia.org/wiki/Soviet_famine_of_1930–1933