The story might be different, but the author is still trying to make a sensible story. And cheating, which has been a big deal in AL, is still very much a serious issue in this game. In fact, the issues of every single LI besides Jill include cheating.
...I highly doubt MC will be able to get away with bedding every girl he comes across and expect her to be cool with it, don't you think so? Otherwise, her integrity and character consistency will turn out to be non-existent and make her look worse in retrospect.
This is why being unable to fuck every girl and ultimately having to make tough choices is, in my opinion, inevitable. In fact, it's already happening. To be able to fuck Jade, you need to either break up or be rejected by Josy and Maya. All the same, this wouldn't mean BADIK is the same game. It has set itself apart with the different setting, characters and mechanics. Having a similarity that is ultimately all about realism and character consistency won't ruin the author's creativity.