Legitimate question. What do you even like about Star Trek because all you seem to do is pretend that the rest of the Star Trek franchise is boring and that Discovery is the only entertaining thing about Trek and that Discovery is the only route that Trek could go in to keep it "entertaining"?
Speaking for myself:
TOS: Watched it in syndication as a kid in the late 70s and early 80s. I found it entertaining as a child the same way I found Lost in Space, the Brady Bunch, the Andy Griffith Show, and Gomer Pyle entertaining, ie as suitable entertainment for me as a child, but as I grew older, I recognized how cheaply made it was (not the Enterprise necessarily, but the single color backdrops and obvious stages used for alien planets). My real passion was Doctor Who, specifically Tom Baker's Doctor Who. It was fun. TOS, though, for their lack of realistic, well, anything (Giant space hand? Giant Space Lincoln? Space babies? Space hippies?), had the most naturalistic performances in Star Trek. I really warmed to the big three as characters.
The movies: I saw TMP in the theater at around 7 years old. Bored me to tears. Cool visuals though. Then came 2-4. This was a brilliant, layered, connected Space Saga. The Connie refit is still my favorite Trek ship, those movie uniforms still my favorite movie uniforms. It is those movies that connected me to Trek. My other favorites are 6, First Contact, and the entire nuTrek series, including Into Darkness. Yes, I said it.
TNG: Because of my love of the movies, watched every episode. I never connected with the 1701-D, she always looked too lopsided, not graceful at all. But here is where the cracks started to show again. The performances were so formal. No one I know spoke like that.
DS9-Ent: More of the same. Same cinematography. Same effects. Same formal almost wooden performances. Same music. Same technobabble solutions. For 700+ episodes. I understand DS9 is better than I gave it credit for, but supposedly that improvements happens in season 3, and so I have to slog through 50 hours of same to get to the improvement. I've never made it through season 2, I just get bored. Enterprise? I watched the first season and part of the second (I LOVED the pilot) and tapped out of more of the same. I checked back in at the beginning of seasons 3 and 4 when we were promised something different, but it was more of the same. I loved the Augment arc at the beginning of season 4, but that was mostly because of Brent Spiner's performance. The rest of the season was basically "Enterprise... but with more callbacks!"
So mostly I love the TOS movies. That's the Star Trek I enjoy the most. And part of that is, yes, I love ship porn. I love the movie era ship designs so much.
Star Trek has never been lowest common denominator garbage like you seem to pretend that is what only matters. If you want lowest common denominator garbage, go watch Marvel or DC movies or watch Transformers crap. People watch Star Trek because the Star Trek brand comes with expectations that you're going to get somewhat intelligent utopian sci-fi.
And while I would argue that a lot of what you call lowest common denominator isn't, here is the cold hard truth: Star Trek on television has been in ratings freefall ever since Deep Space 9. Star Trek isn't inspiring anybody because nobody but hardcore fans watch it. So CBS has 2 choices: Not air Star Trek for an increasingly dwindling fanbase, or try to win new viewers by trying something new. We can disagree how successful they were at trying something new, but had they put up another season of the same stuff they put up before, they would just be servicing an ever shrinking fanbase, and that isn't a recipe for profit.