I very much agree with you, there could be a lot more male activities in this game imo the best character is Alex. Sadly it's just not in the game yet, hopefully it will get more focus later on.
As for your mod question, I do not know about sexuality mods being in development as of now, I have considered making one myself but idk. If you really want it, I highly recommend doing it yourself in the side, Godot is an easy thing to learn.