So... I have a mixed relationship with Bluey. It's on heavy rotation with us when the kids get screen time (along with Sesame Street, Curious George, and Daniel Tiger).
1) It's great. It really is. It's sweet, it's fun, it's wholesome. (And, MMM-related, they teach kids about 'dollarbucks' to understand that things cost money - something we're working on with our 5 year old!) Some of the episodes are PHENOMENAL at teaching kids: Bob Bilby is a favorite, as is Yoga Ball (our kids are three years apart and the youngest thinks they can do everything the eldest can), Wagon Ride, Mums and Dads, etc.
2) There is very little understanding that parents cannot have the kids' full attention and play ALL of the time. For instance, in Trampoline Bandit needs to leave for work and that's simply not happening; in Featherwand, Bingo 'prevents' Bluey and Chili from leaving so Bluey can go to a birthday party. It all works out in the end, but it gives kids unrealistic expectations of obligations outside their experience. (Our eldest expects us to drop everything for Magic Xylophone, even when I'm in the middle of a work project or changing a diaper - and then flips out when we don't immediately participate like Bandit and Chili). It reminds me of the A/V Club list that talks about terrible children's TV impacting children's behavior (see: a lot of live-action Disney Channel programming from the 2000s).
So I'm, like, 96% on board the Bluey train. We watch it and love it - 'tactical wee' has been a LIFE-SAVER during the potty training years. But it does raise some issues re: behavior (at least with our kids) that we've had to reorganize around and talk about. (But you better believe I will Dance Mode anywhere, anytime!)