If I were Fang's PR guy I would have run over and yanked the keyboard out of his hands before he did anymore damage. There's for sure a culture and language gap, but people trolling doesn't help, and he's realized that people have seen through his facade and he's trying desperately to cover his butt.
He's been happy to point out he did a PhD, but a bit more quiet on the university or topic. Most likely a Chinese university rather than American one, and I'm not convinced if his research area was even directly related to anything he does at Hifiman.