Like how many people do you reckon work with "a truly competent chemist" in their life? A knee-jerk Google search quoted me approx. 100 000 people working as a chemist in the States, compared to approx. 135 040 000 people working a full time job in general. That's 0.07% of the workforce being chemists. Of which who knows how many fit your bill of being a "truly great chemist", and then who knows how many people get a chance to work with them. The number of people who should be able to tell how good of a chemist he is is orders of magnitude lower than the views on any one of his videos.

Comments like yours always baffle me.