I had a long back and forth with him on his youtube channel when his short series on "proof" that cables make a difference came out. There were several engineers trying in good faith to discuss actual scientific principles with him that he was either ignoring, distorting or misrepresenting. I was trying to just get him to simply address some simple facts brought up by others, but he just practiced avoidance. I wanted him to at least admit something like "yes, I understand that principle but I don't think that applies here because of a, b, c..." or "yes, I can see that and how what I am saying contradicts that, but I think there's something new we still don't understand there because I have tested these scenarios in this manner and this is the result..." - or just anything that resembled an actual acknowledgement of basic known EE principles.
Instead, he literally starting calling everyone "flat earthers" that didn't just simply believe what he was telling you and that they were ignoring the "science" of his in-person, sighted, listening tests. In his mind, his experimentation of just trying different components in speaker crossovers, speaker cables, interconnects and power cables and then "hearing" improvements is 100% legit science, and anyone that argues EE principles that state what he is saying is impossible are ignorant. I think when he upgrades parts in a crossover and it sounds better to him it IS possible it sounds better, but he doesn't really know why and starts making up his own explanations (which is literally what makes up all the mumbo jumbo in any audiophile marketing you read).