The other thing is that there is zero conflict in Peppa Pig - any bad thing that happens is resolved immediately. Peppa always gets what she wants. Bluey is far more realistic: the parents can't just wave a wand to make Bluey and Bingo's problems go away, and it leads to a life lesson.

For example, in the "Copycat" episode Bluey finds an injured bird and she and her dad take it to the vet. It dies anyway. But it's a valuable lesson for Bluey: she learns that some things are out of her and her parents' control and by the end of the episode she comes to accept it. They would never do an episode like that on Peppa Pig.

(I currently have a Bluey-obsessed toddler).