That's really odd. I'm not disputing what you see on your end, but in my install of Divoom for iOS, I can't see those artworks, even if I search for "nazi flag" from within the Galleria screen.

This is for the Divoom Timebox btw. Maybe it is different for other devices.

But serious question. Am I crazy for not thinking this belongs here? I feel like I'm in an alternate universe where nobody cares about this stuff.

I don't think you're crazy. I would rather not see that kind of stuff myself.