When I was a Cub Scout den mother of 8 boys in the early 70's, including my own son, not one other mother would volunteer to help me.
The wildest of the bunch were two brothers, who were on Ritalin. And it was their mother who always, without exception, "forgot" when it was her day to send refreshments. So, I made sure to have something on hand. (Beware, though, never top anything with a marachino cherry.)
Finding the right games for them to play was a test of my ingenuity. If you find yourself in this postion, try tying blown up balloons to the back of their waists, give them rolled up newspapers, and let them swat away!
I guess today that would be called abusive. Then, it was just plain fun for everybody.
Why wouldn't other mothers help out with the troop?
(And yes, the sickening irony is seeing children being drugged, ill-raised, when it is so obvious the parent is simply not being adult, by choice).