https://blog.cerdagroup.com/en/kidul...y-so-important
https://www.foxbusiness.com/retail/g...ustry-by-storm
https://thehustle.co/07052022-Kidults/
i.e., apparently a "kidult" is someone -- an
adult -- who takes the most pleasure in things (toys, cartoons) that are primarily designed for/directed at children.