I believe what makes the author excited is the fact that Youtube makes this normalization in the first place, means that a properly mastered track and a track m

I believe what makes the author excited is the fact that Youtube makes this normalization in the first place, means that a properly mastered track and a track mastered for maximum loudness, will play at roughly the same volume. The benefit is that tracks where the dynamic range have not been compressed, will sound far better than the loudness tracks. In other words, there is no reason for the studios to master for loudness (at least for Youtube audio).