The point is that of all of the places where a kid could be socialized the public schools are at best sub-par and at worst counterproductive. It seems appropriate to you likely because it's a societal norm and it's what you've experienced, but it's not the best environment that you can give your child.
And I don't know why you're clutching your pearls about the prison comparison. It's a common topic of discussion, how the public schools are similar to prisons, employ similar methodologies, how the stakeholders have similar motivations, and even how the two systems are symbiotic with one another.
I'm not saying remote work will necessarily solve everyone's problems, but that if you're concerned about your child's socialization you should be concerned about what's happening to him in the public schools.