user may be Chinese national, but name calling ("brainwashed") probably isn't the best way to encourage the sorts of open dialogue that will be necessary to change their views
brainwashing (n.) "attempt to alter or control the thoughts and beliefs of another person against his will by psychological techniques," 1950, a literal translation of Chinese xi nao. A term from the Korean War.
still, namecalling these users doesn't solve anything. and i'm sure it's against the community principles.