The kids in the show are just kind of annoying, needy and of out of control. Things I don't want my kids to emulate. The parents feed into it and treat the behavior like it's ok. I also don't feel like the stories have particularly great takeaways for kids most of the time.
It's a minor gripe but I really find the staccato melodica theme song full of awkward pauses to be quite grating.
Everyone is free to like what they like. You are free to love Bluey. I just wish people would stop trying to make us like it, and stop making us watch it.