My issue isnt that they "get" to be multifaceted etc, it is that the individuals and their drama are the focus rather than cool space adventures. I put "shallow" and "static" in quoted bc imo the characters in TOS are neither, but that is how i often see them described.

In TOS there are many relationships (romantic, friendship, antagonism) amonst the crew. They are not the focus of the show however, and are rarely even the focus of a whole episode. We get small mentions of e.g. spocks musical hobby; in TNG we see picards ship collection over and over and over. In TNG and DS9 there are entire episodes focussed on relationship problems, in TOS its mostly incidental to the random adventure of the week

I also do not feel like i am acting like "collectivism requires basically eliding any one person's own humanity and interiority". That is a strawman. I am saying that most media made under capitalism emphasises the consumer-individual and their desires. I liked TOS bc it emphasised the ship and cool (relatively) low stakes exploring, instead of the high stakes high political and personal drama of TNG onwards