Interesting. It's rare for the connection between contraception and homosexuality to be openly acknowledged.
True. Homosexuality and contraception both stem from the Leg-o view of sex: the idea that you can take it apart, throw away the bits you don't like, and then reassemble it in any shape you want. Which reaches deeper, into the Leg-o view of human nature (also alluded to in the article): that there IS no (created) nature, just whatever we want to make of ourselves.
Which in turn is fueled by a resentment that one is a creature at all: that there is a God Who made you, whose commandments are loving and wise and utterly fit for your nature, the way your Creator has created you to be.