Disgust at an abhorrent immoral practice is not fear.
There is no such thing as "Homophobia"
A phobia is an irrational fear of something.
There is nothing nothing irrational in the distaste of sexual activity that involves fecal matter and endangers public health.
Furthermore, the left don't treat it as a phobia. The is no other group of phobics that are villefied for their phobia, all other phobias are treated sympathetically.