Stopped at 4 min. By then, it is quite clear he does not have basic knowledge on the subject he is tutoring - electroacoustics, measurement technique, signals and systems.
I gave this video a chance. There are many yt-presenters out there doing audio/hifi related content, of which most are at best right out misleading. They pose as experts, but lack basic knowledge about the technology and physics behind - basic knowledge that has nothing to do with preference or subjective-vs-objective or opinion.
It is not wrong to do a video about your opinion on a product and its sound, like you experience it. But it is wrong to present technical information that is incorrect according to established science.
Science is not opinion. It is not democratic. You can not vote to find the answer. Science can be challenged, yes, but then you must start by learning what is already known, and then you can put down a hypothesis and prove though theory and controlled experiments that your new discovery is correct.