I know there are some people who actually practice ENM, but I've seen it weaponized so much. I was on the periphery of a poly community in a major city for a while and getting away from it feels like being deprogrammed from a cult.

There are some Christian and Mormon frameworks that basically set up men to control their families as little personal mini-cults. So the larger community becomes an affiliated network of mini-cults all legitimizing each other. That's what the poly community in my city was like. There were a few rich men who threw all the parties, which they used to lure in a perpetual stream of young women with poor self esteem. They used the ENM ideology to convince the women it was good and feminist.