Rick Beato has Views on modern music all sounding the same and heavily compressed, so there's definitely some controversy possible there.
Outside that my favourite music- and non-bass-related channel is The Charismatic Voice, where opera singer, voice coach, etc. Elizabeth Zharoff reacts to songs but then explains what's going on mainly from a singing technique point of view but also throws in some music theory as well. She does interviews with singers too like David Draiman, Lzzy Hale, Tatiana Shmayluk, etc. which are very informative.