I have no interest in trying to convince people not to be racist on the internet...but i made a thing I'm proud of and I also have no interest in sharing it with racists.
Lovecraft was a serious bigot. His racism wasn't incidental, it was a major part of who he was and the stories he told. When we use Lovecraft as an inspiration but fail to address his behaviours as a person, that acts as a tacit endorsement of his racism. It empowers those who still share his views.
It's that simple. If you're not interest in the game, move on.