No. My view on the matter is that Youtube Kids is ostensibly a silo for children to watch videos, but as evidenced by this article, it's largely a silo for algorithms to compete for views based on inputs that have nothing to do with children. My view on the article is that the author assumes that if these videos exist, there must be children watching them and my own experience suggests that's not an easy leap of faith to make.
Superheros Pregnant Soccer Balls Fidget Spinner Spiderman Joker Hulk Cartoon Funny Kids Video Pranks
This is literally a video expression of this:
There are no children capable of finding this video who are not old enough to go "whoa. Pregnant hulk roundhouse kicking pregnant Elsa. WTF?" The formative age where you wouldn't want your kid to see this isn't looking for it. My kid's favorite video at 2:
My kid's favorite video at 3:
She's not weird. Sit through a Teletubbies episode; the young kids mostly want calmness and introspection. This is why little kids love Mr. Rogers. They gotta start being into fart jokes before Sponge Bob becomes interesting.