Note that one doesn't need to be actively bigoted in order to do harm. The vast majority of those who are slowing down the spread of rational thought aren't religious fundamentalists out to stop rationality; no, they're the completely innocent ones who unthinkingly pass on cached thoughts.

It's no different when it comes to attitudes concerning, say, BDSM. I don't for a moment think that Goetz was actively bigoted when he wrote that. That doesn't mean that he shouldn't have worded it differently. More generally... it's often dangerous to think "but (he isn't / I am not) bigoted", as if only active bigots could say harmful things. Once the harmfulness of what they're saying is pointed out to them, they automatically go on the defensive - after all, only bigots say bad things, and they're not a bigot, so the other person must simply be oversensitive.

This probably deserves a top-level post.