I thought it was fun! But I felt cheated with Spock and Chapel. They definitely should have had a duet. I'm also upset that they didn't resolve it in any meaningful way at the end.
Since La'an and Kirk were sorted out in this episode I kind of expect Chapel and Spock are going to get their resolution in the finale. But yeah it is feeling a bit like when Deanna and Worf dated lol "wow it happened and then was gone so fast hunh...".
I loved the episode. Some people hate it and say it's way out of tune for Star Trek, but I don't think it's any worse than the crew turning into Robin Hood or being trapped in a board game
Musical episodes always take me out of the immersion of the show because I'm always trying to figure out who's actually a good singer and who was severely auto tuned to compensate.
I will say that overall I enjoyed the episode. The Klingons had me rolling, and I really liked the psuedo-science explanation for why everyone one was singing.