Yeah, isn't there a French guy who's made a whole career out of looking like Napoleon in reenactments?
Compared to World War II, it isnβt problematic to depiction both sides fighting; it is a lot more problematic for people to dress in Nazi, Imperial Japanese, or even fascist Italian uniforms.
Honestly I'd rate the Japanese or Italians as slightly less problematic, and the Nazis on a similar level. American chattel slavery was deeply fucked up. Hasn't anyone watched Roots?
Of course, way too many participants are denialists about that bit.