If I may, I don't think panda wanted to generalize away, although it seems a little that way, but simply point out there's a huge amount of hypocrisy involved in those who usually complain the loudest.
It just seems as if he didn't find the words to put it eloquently into sentences.
That said, I do agree with him to a degree, in that the loudest criers are usually the ones who the least actually hold onto what they preach, but at the same time such behaviour is not limited to one side of the spectrum/sexual identity. Just check out GOProud, to see that there are lesbians and gays who readily work against their own interests, for example.
Stupid simply comes in every form, shape, gender, age, color and sexual identity.
That said, the "Gay love is stronger" thing is pretty silly, but I think only born from a more simplistic point of view, not necessarily meant as an insult.
Love's different from person to person, and there's no measurement system for it, and there -shouldn't- either.
Same rights for everyone.
No excuses. If hetero couples can marry, so should others.