This is an extremely small sample size to extrapolate from, but in my experience the most rabid "China lied, people died" folks are the ones who have a history of dating almost exclusively East Asian women.
You'd think that if they're drawn to a stereotype and the stereotype is inaccurate that once they were in a relationship they'd notice and look for someone else but ¯\_(ツ)_/¯ Guess some people never need to check their speculation against reality.