>>818514311) Selection bias. The men who don't have problems with their preferred sexual taste usually aren't in therapy in the first place.
2) Some therapists are REALLY strict with any kind of patient confidentiality. If she only has a couple of male patients and she answered that in any affirmative way, she just outed them. All you would have to do is stalk her office and find out the clientele.
3) Rather than talking about your issue or moving past it, you attempted to redirect the conversation in a way that would justify the misanthropy / paranoia / distrust / whatever issue you have. At best it's a confrontation which most female therapists aren't equipped to handle and at worst it shows you have zero interest in getting better.