Perhaps. I'm skeptical, but I have neither data nor anecdata to support that skepticism, so I won't actually dispute it. But the problem there is still the man

Perhaps. I'm skeptical, but I have neither data nor anecdata to support that skepticism, so I won't actually dispute it. But the problem there is still the manipulative and abusive behavior, not the polygamy. It's absurd to argue against healthy polygamous relationships just because there are unhealthy ones.