This is a pretty bold thing to do for a franchise that, as far as I know, has never broached the subject of musicals. While I don't think it's the best episode or worthy of a 10, it's not a 1/10 and DEFINITELY not the worst Star Trek episode of all time as some people are claiming.
Have you people seen any Star Trek in your life? You think this was the worst of all time? Really? Please, be real for a second. It's not. I'd honestly say this is above average. The plot reasoning behind the spontaneous singing could be better, but it's certainly not bad.
There's some pretty good singing on display here from various actors, some of it you can tell has autotune but several of them were also just belting it out with their own voices. I just think it's impressive how they pulled this off. There are issues, and ultimately I think it will boil down to if you can't stand musicals or not; but I really liked this. I was particularly fond of the Uhura focus towards the end of the episode, considering in the past of this show we got an Uhura focused episode where she was communicating with aliens through harmony. This felt like a spiritual callback to that.
I saw a review saying something along the lines of "what scifi fan would want a musical?" ME! I do, I think it's a neat idea. Based on the numerous other high reviews, clearly a lot of people liked the idea too. Going into it, I was worried it would make me cringe based on how they'd handle the singing but it really didn't. Uhura's actress stands out having great vocals, but she's not the only one. Apparently some of the actors have experience singing in the past and you could definitely tell.
I don't know, I can't justify giving this episode a 1/10. I could maybe understand if you gave it a 3, 4, 6, whatever. But a 1? Come on now. You're just lying to yourself if you've seen other Trek and are calling this the worst of all time. I love Star Trek, and there have been some absolutely awful episodes before that this episode comes nowhere close to being as bad. I knew this one would be divisive but I'm glad to see so many people who agree this episode is solid.