This is similar to what i meant.
Basically the point is: If you are trying to get people who love harem to be ones that give you money, you aren't going to succeed since you are adding content they hate. Avoidable or not, it impacts the characters that are involved in it (e.g. LI that would fuck a futa is not a compelling LI for a harem).
Now that is only an issue if you really care about the harem players.
To put it more of a marketing way, you are competing with other games for harem players, if another game is harem, and has zero futa on LI content, they will win because there is no futa tag, and only harem. (there is also the issue of how it impacts the LIs personality too, because if there is futa on LI content, for any LI that has that, they are an "LI that would fuck a futa" not simply an LI, and for most harem players... they would be disgusted with LIs like that).