This doesn't bother me. The gays have won equal rights. Their push for acceptance and parity with straight people has been wildly successful. It's like if I found out the CEO of a company I love financially supported anti-pet lobbying groups...good luck taking away people's cats and dogs.
The only rights gay people might have not won involves adoption, but I feel like thats anti-man more than anything else. Society doesn't feel comfortable giving a person a child unless there is a woman involved.