There's a term for the current 20-somethings who can't be seen as responsible adults yet, I don't remember what it was, but searching for it got me this long article, from 10 years ago! https://www.salon.com/2010/12/23/not_quite_adults_interview/

Maybe it's the still-living-at-your-parents-at-25 economy... Maybe it's also because the 20, 30-somethings have been raised by more and more helicopter parents and schools giving out participation medals, i.e. too coddled.