Manuel always seemed to dislike things he saw as "unprofessional", which included most usage of models without clothes and pretty much all discussion of genitalia. This quite aside from the ad networks banning sites they perceived as porn.
However, since the community site doesn't rely on ads and I think naked models are perfectly on topic, I don't have the same problem.
I may be tempted to do it, but it seems to me the MH models look somewhat more doll-like.
Possibly. But it's perfectly possible to use them as a start to achieve pretty amazing results, see for example
viewtopic.php?p=43700#p43700As with any tool set, you'll have to learn the quirks and how to best work with them.