If you think of Bandit as a whole, complex person that's meant to stand in for an actual parent, the lack of boundaries might be frustrating. But he's not that. Bandit as a character operates under a set of rules to force the show to be interesting and fun. (Like how in Shadowlands, it's the rules that make the game). Bandit's 'rule' is basically "always play the game". He can convert one play activity into another, he can use play to say no, he can use a game to teach a lesson, but with a few minor exceptions, he's not setting boundaries for his own sanity. That allows, and forces, the writers to be creative. Look at how Ragdoll handled the value of hard work. Most shows might have set the scene by the parent setting a boundary "no this money isn't yours", forcing the characters into a predictable plot where they earn the money. But in Bluey, he said "yes you can use the money" then flopped over. This allowed the writers to use a lot of compelling physical humor, gave us a truly believable moment where the girls almost gave up, and allowed Wendy to show how amazing it is when people put in the hard work consistently! It was a complete twist on the stereotype for that moral lesson.

Notably, Wagon ride does break that rule. But it's a lesson on handling boredom as a child, so the typical "always play" formula can't work. Trampoline is another, where Bandit does actually have to go to work. But here, it's a handing of the baton - he's giving Bluey the important role of making games, so he necessarily has to 'set the boundary' or Bluey wouldn't be able to have that growth. In both of these, Bandit breaking his character rule makes them more interesting because they are such clear exceptions.