I would actually proudly call myself a kidult, because I wouldn’t agree with your definition of that word, especially with your highly subjective assumptions in the discription, where you’ve also put every single millennial under.

Having said that, it is a nice word that at least conveys a carried message/concept that one can grasp and/or create an opinion and/or getting the notion of understanding the conveyer of it.

Kudos kiddo! ;)