The other thing I would say about this is that I think this is a very personal choice, and I wouldn't try to impose my decisions on others. I wouldn't demand a boycott of The Vanishing of Ethan Carter because of its creator's political views. Even works whose explicit political outlook is different from mine, generally I would not purchase myself (or would feel free to criticize openly if I did), but I wouldn't expect other people to do so on my command.
I recently had this discussion with some friends of mine over
The Birth of a Nation, a movie that recently premiered at the Toronto International Film Festival amid fresh discoveries of the director's past sexual assault allegations. The discussion isn't entirely germane here because a lot of it focused on whether the man's career should suffer if the allegations turned out to be false (and I won't get into the lengthy arguments concerning court prosecutions of sexual assault and what exactly the lack of a conviction means). In many ways, however, you have the same essential argument: knowing what you know about the situation, do you feel comfortable watching the movie? Playing the game? Reading the book? etc., etc.
Ultimately, that decision rests on a complex set of internal decisions that don't have anything to do with objective truth. It's about what you're personally comfortable with, what actions you think support the creator or their views/actions versus just the work itself, and so on and so forth. Is art and the artist inseparable? There's no right answer, and where you stand probably informs how many answers to this question you have.
(Never mind that many, many instances where you simply don't know enough about a creator to decide if you like their past or not--how do we know any given game developer isn't a racist, or homophobic, or any of a million other things you'd personally find offensive? Is that enough to relieve you of your perceived obligation not to support that person and/or their work?)