You... you utter fucking dunce. You've literally picked up none of the actual context of the video. You supposedly watched the whole thing and managed to comprehend none of it.
"Music Theory" in the Western Context, as shown through nearly every educational program in America and Europe for the last 100 years aside from only the most progressive of programs, and through much of the educational literature designed to explain "music theory", is not actually "General Music Theory". It is the Western Musical Theory of Harmony developed in Europe in the 1700s and 1800s. "Music Theory" as defined by Western Educational systems is inherently racist in it's assumption that "General Music Theory" can be ascribed to this specific and focused type of theory, which is patently wrong and Euro-centric. This is literally what the whole debate is about. The fact that you're trying to argue absolutely absurd things like "The construction of music can't be racist"--Yeah, no shit genius--Shows your utter lack of comprehension or your utter contempt for anything that might challenge your shallow view of history and society.
It doesn't surprise me that the guy you're responding to can't grasp this considering he thinks biphobia is just a "diferring opinion" and not bigotry.