Not him, but as a professional retard i’ll try and explain. Engagement with pornography is a spectrum. On one end, you have the omnipotent observers. These people get off through empathy with the participants. These kinds of people are much more open to lesbian porn (if they’re men), and tend to focus on the mental or conceptual. On the other end is the self inserter, these people need an avatar in which to participate with the pornography. Instead of engaging on an empathetic or emotional level, these people value immersion and tactility. The sense of touch is very important for these individuals. The vast majority of self inserters require an avatar of the same sex as them, performing an action that they themselves would like to perform. Now most people are a mix of the two, but most lean one way or the other.
Hope my PHD in cartoon pornography helped.