Sucking dick is what many heterosexual women and gay and bisexual men like to do. As Merriam Webster puts it, straight is a vernacular synonym for heterosexual, meaning “of, relating to, or involving sexual activity between individuals of the opposite sex.”
Jimmy Troy can identify as whatever he wants. (For all we know, he identifies as straight because there is benefit from the designation in the social hierarchy.) But, whatever the case, I don’t need to concur, and there is nothing disrespectful about recognizing that he is, in fact, bisexual, if indeed he “enjoys sucking dick so much.”