As someone who grew up with it, that’s what turned me off of it. Back in the day, it was perfectly willing to try new things, to say things about culture and science and ask deep questions about reality and so on. At present, it goes in one of two directions.

First you have the Nostalgia Trek, which seems mostly interested in catering to people who like Star Trek as an aesthetic setting. People who like the setting of Guys who Explore Space and Lecture Aliens about Neoliberalism. They like the aliens, the ships, the politics, they like to see their favorite childhood stories and heroes on their TVs. But they have no interest in the ethos of Trek, or even Science Fiction as a genre of fiction. This version in essence is Sci-Fi for people who want to pretend to like sci-fi but hate all the stuff that makes it actually science fiction— the hard science, the philosophical questions about reality and the questions about things that modern Americans take for granted. To them the Federation is America, but in space, and Starfleet is the USA military who are always right and never fail.

Second, you have the too-cool-for-school Trek. It’s not any more willing to tweak noses or really shake things up. They just decided they don’t like the old Trek aesthetic and therefore “deconstruct” it, or lampoon it, or “subvert” it in utterly predictable ways. What if … the federation is the bad guys? What if we totally glued teeth all over Klingons for no reason? What if we suddenly discovered the Roger’s and Hammerstein Nebula? Or turned Spock human just before his mother comes to visit. None of this is deep or interesting it’s more like a kid deciding it’s cool to deface a painting.