I think it's a complete lack of historical context among other things (media soft power, appeal to right wing westerners and men in particular). People have no idea just how evil Japan was during WW2, probably because they didn't do the unforgivable crime of killing white people and mainly killed Asians. And then the same people that did all these crimes and their descendants have basically run Japan since. Personally I think it's great when a Chinese streamer goes and pisses on the shrine to honor imperial war criminals and mass murderers