I think the issue is that, as an adult we can (sorta, financial necessities might make this infeasible) always choose to remove ourselves from a situation. In school yall folks are stuck with each other - and some of the kids literally can walk all other the others.
Teaching bargaining will pay off dividends in these children's lives.
The children who are being walked on should be supported and given the ability to survive in their mini lego-world.
If they're being walked on, but receive no help because "the system allows it" - what chance do they have?