Sure, I am aware that combination of well-developed female characters and blank male characters can't be compared with a well written history with both characters well developed. If we compare this with videogames it could be equivalent to videogames with a customizable character that has less development so any player could be imaging that his character is exactly what he wants. A fixed character could have a better story than a customizable one, but sometimes it is good to sacrifice things in the story to have a more enjoyable experience. Just like videogames has the playable part, porn stories have also the porn part, there is a purpose to tell a story but also to excite the readers with that story.
But keep in mind I talking only about erotic stories, or even I could say porn stories, like many stories in Chyoa that have sex or things related to sex on almost every chapter which means the sex is what engages the readers to keep reading it. In that case, I prefer those type of MC even if the story is worst because if the main factor of the story is the sex and the sex does not turn me on if becomes an unexciting story, and therefore boring, no matter how well has been written. Another different thing would be with a story so good that there are more things engaging the readers to keep reading it than just sex, in that case, I would continue reading it even if the sex does not turn me on because instead of porn with a plot the story is a plot with porn.
If you allow me the vulgar expression, if reading a porn story the thing between my legs is all the time sleeping, I cant continue reading it, and that happens when I read about stories of other men, I don't hate those stories because it is not the same as real life men, it is just fictional, but while real life men telling me their sex life is repulsive and unexciting for me, fictional men sex life is still unexciting.