Now that I've thought about it, I agree that the New Statesman should have allowed for the possibility that gay people would prefer an iPad to a lover no less than straight people.
I wonder what possessed the poll takers even to ask the question? Have there been many cases of men caught cheating with an iPad?
Anyway, maybe what possessed them was posts like this one:
http://forums.macrumors.com/showthread.php?t=1347853