I tend to agree with that. Maybe folks don't consider them as sexually attractive as those incredibly beautiful east Asian gals that are snapped up like hot cakes. I don't know.
The trend is South Asian male-Caucasian female, which inverts the trend for East Asian-Caucasian marriages. A friend of a relative wrote a hybrid "Hinjew" ceremony which they have spread far and wide, and all the couples were Jewish woman, Hindu man.
I would guess that South Asian men far outnumber women among immigrants in their 20s and 30s. The American-born population/children still have far to go to become a major share of the community.