He does not perfectly explains it, I came here from that video to do a research because there was no confirming answer. Just because he is a youtuber you shouldn't take everything what youtuber says as a fact unless really explained to why. He is basically saying the same thing what the guys are discussing here, that there is no actual proof at this moment whether or not these other attributes gives any kind of actual practical bonus or help.

BTrue thinks its true, he thinks people have done research, but he is basically basing his opinion on those people who have supposedly tested it, same people who are being mentioned here as well in above conversation if you would care to read. You see two sides conflicting about what whether it's true or not.

So BTrue is not explaining anything to why since he hasn't done a deep testing himself, he simply read about some stuff, maybe the same posts in which we are in and just read this one guys opinion or statement without much of a proof.