What are you on about? Starfleet is a (at least quasi)military organization with a obvious hierarchical order. The captain tells you to jump? You say how high. There's a lot of discussions, but in the end she/he decides the fate of all aboard.

Now, I love old Trek (up until and including Voyager) - it has a lot of merits - but it's far from how I'd want society to be optimally.