eljefe, your taking this personally. Step back and look at the big picture. Your situation, as admirable as it is , is in the bottom of the minority.
These rules are put in place, whether you like them or not, because most situations involving too many people in a campsite are NOT people who legitimately have 6-10 children. (Except maybe in UT, ID and AZ, lol).
What your asking for is like buying frozen food but being able to open it up and take the carrots out of the chicken pot pie because you don’t like them.
It’s a one size fits all rule whether you agree or not.
If I’m camping in an established campground, I don’t want the site next to me with 15 people in it. Brothers, cousins, et all. Would I care if you had your kids there? He!! No. Sounds like fun. Got enough for a good football game!
How does the campground know that YOU are legit, or are you trying to cram your whole Cub Scout den on one campsite?