Considering what percentage of tech workers in the West and therefore on this forum are of Asian heritage I doubt there is much brainwashing going on beyond the typical lack of knowledge on culture or history and so on.
1. You're assuming Asians are predominantly pro-China in the West.
2. You're assuming that Asians in the West can't be brainwashed by anti-China propaganda.
3. You're assuming that Asians (Japanese, Indians, Koreans, etc.) are aligned on political views. Even East Asians aren't aligned.
4. You're assuming that the Chinese/Asian population of tech workers in the West are proportionally represented here.