I realize this post is a bit old (as I post this comment), but....
One of the things that "Dr" Laura said about gay people is that they are biological errors. That is a bit more vicious than claiming that homo-sex is a sin.
There's no doubt Dr. Laura is a gay-basher and the comment you cite is probably the best evidence for that. The excerpt posted here is absurd for its admission that Dr. Laura thinks homosexuality is a sin and its argument that that somehow absolves her of the charge of gay-bashing.