Comment by NoGravitas

Eh, the current 10-hour seasons are the worst of both worlds.

Telling a story in a "tight 90" means making very deliberate choices about what to include, what not to, and how to make scenes do double duty. Having 23 episodes a season lets you slow down, spend time with the characters that's not all focused on the season plot, it lets you have B-stories in every episode. A 10-hour season doesn't get to do that, but it doesn't enforce the same discipline as 90-120 minutes.

Compare Star Trek: Deep Space Nine to Star Trek: Discovery or Star Trek: Strange New Worlds. I greatly enjoy SNW, but the characters and their relationships with each other are in no way as substantial as in DS9 (or even TNG, which was much less character-focused than DS9).