I tend to draw the line along the impact of my choices. If I download an open source text editor made by a Nazi for my personal laptop it's probably fine. The software is free so I'm not handing money to a Nazi who could use it to harm others. It's on my personal device so there's very little risk that I'm signaling support for the Nazi or advertising for his text editor either. Still, text editors are everywhere and if I can find one that works just as well for my needs and doesn't depend on a racist for updates that's probably a good thing.

I also don't the sweat the small stuff. Hideki Kamiya has been accused of being a xenophobic ass and maybe he is, but people are entitled to their bad takes and internet drama isn't going to stop me from enjoying games he's worked on.