I don't think people understand or grasp the comedic and fluff potential of Jason's goons gentle parenting / KNOWING he's young without knowing he's young.
They debate on his age, most settling between 16-20, but nine of them think he's twenty-one, but then again, they also suspect he doesn't have an I.D. They know he's a legal citizen, he's giving t the accent and Gothamite-born-and-raised attitude, but they don't freaking know, man.
Jason died when he was fifteen and lived with assassin ninjas for the next four years after rising from the dead, as one does... He doesn't know EVERYTHING, and sometimes he does stupid, childish things.
His goons are adults, some have children, some have children Jason's age, they're mostly all older than him, and so they kinda just... Just take to it, sometimes?
They side eye the f%#& out it him when he smokes, like, is he ALLOWED to so that? Boss, what about your health?! You're still so young!?
And Jason isn't even entirely aware of it, he's independent, of course, but deep down he's still just a fifteen year old kid who didn't grow up properly. Forced to grow up to fast, then not at all, and he doesn't realize it, but his goons do.