I haven't got the time now to read through everybody's comments, basically I came here because I'm checking out pliglet
(I think that I'm in love
...) and chasing up threads that she's commented on, but I'll throw in my 2p / 2c:
a) I agree totally that sex isn't the most important aspect of poly.
b) Hef is rich and famous. Also (I suppose) the boss of some of these women. I have to wonder how many of his companions are with him for reasons nothing to do with sex OR love.
c) It's my own little bugbear, but is Hef happy about the women having other partners [apart from voyeur-pleasing "lez-sex"] aside from him? If not, my take is that he isn't poly, he's got a harem.