Whatever the case, I don't find the majority of videos produced in mines worth watching. They are either endlessly boring helmetcam footage in which you can't really see a huge amount, or have a "dramatic" noisy music track which ruins what I like about going underground - quiet reflection on history (in mines) or nature (in caves). Occasionally some good stuff pops up - but only occasionally. After watching a few vids from particular Youtubers, you soon learn to tune out and ignore them. I have better things to do, and much better things to watch.