Starfleet going around to other worlds to fix and moralize about other peoples’ problems, but never needing to self-reflect or improve on themselves.

There are a few PTSD episodes that at least try : Picard at the chateau and Archer on shore leave after the Xindi adventure.

I feel these are the best episodes where a character realizes they have changed and not for the better, but I wish there were more.

Maybe trek is sleeping on the post-adventure recontextualization power of a shore leave coda?