While I don't necessarily agree with burning trash or littering. I can tell you it would not interfere with my overall camping experience because I would be busy doing my own thing vs. spending my time watching/monitoring what my neighbor was doing.
Unless directly confronted with a unavoidable issue I try to let the CG management enforce the rules, and monitor the CG happenings.
I go camping to escape the rat race and relax. It's going to take more than a couple of playing kids and trash burning to interfere with my camping experience.