Maybe I have to clarify. Small Penis Humiliation or SPH is a real fetish. My stories are a 100% fictional and don't include any real person or events.
That being said, SPH is two sided. You have the dom who is giving the humiliation, and the sub who's receiving it and getting off from it himself as well. That fetish is well known in both gay and straight porn. Ever seen cute girls or dominatrix doing the "two fingers small dick sign"?
Like all fetish, it is personal and have to be concenting from both parties. When I promote my patreon on twitter, I get more guys with small dick who ask me in private messaging to humiliate them than doms who wants to humiliate others or the fictional characters in my writings.
So in conclusion, my stories are of course really specific and not for everybody. But I disagree strongly with the two comments above about my erotic stories being harmful.