[livueta]

Reminds me of this guy, who got a ton of blowback for calling out fake martial arts masters, goading them into fights and humiliating them: https://en.m.wikipedia.org/wiki/Xu_Xiaodong

> Xu started a dispute with Wei on social media, beginning with a demand that Wei provide evidence of his abilities, and culminating in a bare-knuckle fight in a basement in Chengdu in 2017, where Xu won convincingly in less than 20 seconds.

[ksaj]

Mentalist Derren Brown also did an episode where he took advantage of students of this kind of teaching, by using their "brainwashed" instincts against them to demonstrate he had the same powers as their sensei, even though he had no martial arts training.