I doubt that everything that many (not all, I know, but I include myself) didn't like about Grace is anecdotal. But I also doubt that it is something persistent. Maybe it is the reason why the relationship between Grace and the MC "starts". And, as I said, I highly doubt Grace's entire plot is based on that. It would be a very poor decision, in my opinion. Because it wouldn't make sense. She has all the weapons to dismantle the blackmail very quickly.
-Would I personally prefer Grace's thoughts about fucking Benoit to be changed? Yes.
-Would I personally prefer to change Grace's past a bit and not make her a whore who fucked all her coworkers? Yes.
She could simply have had an affair with one of her teammates and he, without her consent, recorded her. And that would be that. She wouldn't look like a slut. lol
Based on what we've seen so far in the game, does blackmail work as a plot going forward? No. Definitely no.
The "but" I find is that maybe Grace is ashamed of her past and of having fucked Benoit and maybe that's the main reason she wouldn't act on it. But this is also meaningless when we are clearly shown Grace's thoughts saying how much she enjoyed being fucked wildly while Benoit's wife was on the other side. At the time she enjoyed it, yes. Sure. But to think that while they're trying to blackmail you is genuinely moronic.
That said, the conclusion I draw is that the writing, dialogue and parts of the plot seem really bad to me. But, seeing as how the "writer" of the game thinks he's writing a masterpiece and won't even accept constructive, objective criticism.... I understand why you bother with subjective criticism. They can be offensive and I include myself sometimes. But for you to not accept genuine and respectful comments insulting everyone is ridiculous.
I don't have much faith in this project. At least so far.