> Homosexuals don't have some special monopoly on honesty, nor are they immune to using emotional string pulling when they try to get you to believe what they are saying. The reply would have been better without the first paragraph.

I believe the point was that he was advocating for a cause which doesn't benefit him or directly affect him. I think it's a valid point: it's easy to fight for things that benefit you. It's like you'd be less skeptical if a rich person fights for higher taxes on the rich than when a poor person does.