I think it’s coincise and clear explanation of the principle we always talk about.
I would highly suggest to take the time to look at the full video too!
Edit: it occurred to me that someone may think that the full video is by me. It’s not! I just cut the clip on a section that I thought could live and make sense on its own. The original author deserves all the praise, for the high quality, very informative video he made
I wouldn’t put too much stock in what they say, the clip is fine and I can’t find anything disagreeable about the voice. I think this user is just upset at YouTube, not your content. Good work on this :)