Gene explains it in the video...
Jay has a serious scientific background but just loves music, which is also Gene's hobby. Jay goes on to explain why he has generally avoided measurements and focuses on listening because he likes music, not the process of denigrating bad speakers.
He's done way more than just ignore measurements, he's spewed a bunch of BS in the past. His wording there just shows how dumb he is, classic criticism of those who value objective data not enjoying music as much as those who don't care. New flash, I looove music and enjoy the hell out of it, I even make it, and I have extensive experience with audio analysis. Wish these goobers didn't have a platform to spread their junk around.