It kinda straddles it. Most of the characters are on a TV show, and some play into it or are minor bit characters. Meanwhile the major characters have growth and depth as it's explored what kind of person survives in this situation and what it does to them.

You're not going to get the level of depth from side characters you'd get in say Murderbot, nor will you get similar growth, but that's because Murderbot is about healing, and DCC is about people in a ridiculous and bad situation trying to stay whole or at least break on their own terms.

I am not an advid reader so I don't not want to mislead you with my answer, but I feel the main characters do build a depth of dimensionality as the series continues.