I think this talk was interesting. You may be getting downvoted since people don’t want to watch the whole video to get the “answer” you alluded to, so I’ll summarize briefly:

Aella notes that orgies have recently been very focused on maximizing consent and safety, and as a result people have very little actual sex at the parties and are dissatisfied. She notes that the kind of women who attend orgies are disproportionately into submissive power dynamics and somewhat rough sex, so she tried creating a type of orgy where blanket consent is given up-front, men outnumber women, and everyone is vetted for attractiveness (and presumably other traits, which she does not specify). This apparently leads to parties where the men aggressively initiate sex with many women, and everyone is very satisfied with the outcome. The parties have strict rules, such as absolutely and immediately respecting the safe word.

How is it possible to vet for attractiveness unless everyone invited agrees everyone else is attractive before going? Most women I know are so choosy about what they find attractive that the only way you’d get 10 women to agree that any individual man is attractive is that he’d have to be a model. I don’t know many straight models who have an interest in orgies. They don’t typically want to share.

I'm a pretty introverted guy, so feel free to correct me here, but:

I fail to see how orgies and social gatherings have much correlation. The kind of people who are engaged enough to attend an orgy probably have entirely different dynamics, boundaries, and safeties to establish than the ritual of getting casual people to even show up at the door.