I'm really not getting 'many victims are also perpetrators' thing? Yes, there are cases where both parties will abuse each other, but that would seem like a fairly unusual and rare situation, rather than a 'many victims' thing.
Why would it be unusual? There are plenty of couples where both drink too much and shout at each other and have a generally destructive relationship dynamic.
Two drunk people can have sex. That's not unusual.
Why would it be unusual? There are plenty of couples where both drink too much and shout at each other and have a generally destructive relationship dynamic.
Absolutely, two drunk people can have sex, but not if both are drunk beyond giving consent.
There's a difference between 'a generally destructive relationship' and 'many victims are perpetrators'. It is a fairly extreme claim, with absolutely no evidence to support it.
The human urge for and ability to have sex are pretty much indestructible. They persist long after other abilities (e.g. to make rational judgements & give informed consent) have vanished in a haze of dodgy substances.