It wasn't a disappointing season per se, as it's light years (pun intended) ahead of all the other "Trek for modern audiences" we've seen (other than the 10/10 Lower Decks).
But this season certainly fell short of the last two.
As for the episode, it's hard to drum up much emotion for tertiary characters. If it had been #1 or Nurse Chapel going through it, we might care more... but they have the best kind of armor... plot armor. So it's Letterkenny guest captain and Ensign Expendable instead.
It's a really big cast for a short run show.
Side note - if you play Skyrim - they stole the baddies outfit from the Falmer Armor right?
The Inner Light was an inspiration for it... and it had some of the pull... but again, it was given short service.
The fear I have is that if they filmed much of season 4 already, we're in for more of the same.
I'll take it. It's not bad. But it hasn't reached the high bar of the first two seasons IMO.