Bigotery has risen too.. I don't say there is a link.. but ... hm...
Also you are completely missing the point of the study, first it doesn't only concern men, second there are explanations to this lack of relationship.
Third. The lack of sex is not a problem. There is no such thing as sexual misery both biologicaly and sociologicaly.
Some people are just occupied to other thing and that's okay.
Fourth and last.
Women don't owe you sex. Life don't owe you sex either.
(I know you didn't say that, it's just to clear things up)