They could just be lucky, and have a kid with that kind of attitude (on top of the things you mentioned). I've seen a number of stable families (at least outwardly) around school/work whose kids are glued to the damn things.

What really makes me sad is when I'm at a restaurant or shop or similar and there is a parent with a small child getting restless and they pacify them by sticking a phone with Youtube in their face.

My point is that they are wrong about which parts of their good parenting are causing the good outcome, which is important because if I'm right then we should understand the problem more as a failure of society than a failure of parenting.

Of course anyone can be a bad parent, but being a good parent might require having a certain amount of material security and wealth. Not such a crazy idea if you think about it.

It’s a correlation to be sure. But also inter-generational family habits, like inculcation values of meriting good habits, e.g. discipline. Some families like that basic history.

You're being down voted but you're right.

You need a support system to be able to model good behavior. If you barely have energy to make it to bed at night then you definitely won't have energy to entertain a hyperactive toddler. Things like having grandparents help raise kids and spend time with them instead of turning on YouTube can help.

If I had children when I wanted to (which I am still saving up to do) then their grandparents would still be working full time.