I think the article is extreme. What was written was good for the 80s and 90s but not anymore. With the Supreme Court ruling, attitudes will only get better although there is always a long road ahead when you talk about discrimination.
But I really don't believe that gay people loath each other. That's too extreme. If there is a prevailing attitude within the gay community, I believe that it's acceptance. Just becuase we don't want to hop in bed every time we're given the opportunity doesn't mean that there is any animosity towards that person.
We're not in a perfect word yet but we're a lot closer than the author of the article indicates.