Here's the main reasons:
Dating Killmulator was designed to describe certain situations that tend to happen to women.
In this specific game we thing it's important to have a female MC to explore themes such as male / female toxicity, SA and perception of women in society.
We have considered this option a few times, but with the resources we have right now and our writing team (we are 3) it's pretty much impossible.
Keep in mind we have other jobs (plural) as to economically sustain ourselves and this game.