Personally, I'm convinced Bluey is covertly a wholesome show for parents, dressed up as a kids' show, but ultimately still for the sake of children by way of 1) encouraging watching together, 2) improving parents' mental health and well-being, which has positive outcomes for their kids, 3) getting parents to be more engaged and imaginative.
It's truly, actually a family show, not just a show for kids that parents can tolerate enough to sit through.
Pretty much any episode that has the girls learning a lesson is also teaching a lesson to any of the parents watching. Or "adults," I should say -- I don't even have kids and I feel like a better person for having watched!