the odds of (1) an experienced audiophile (2) with high level gear and (3) music experience also having the (4) motivation, (5) personality and (6) technical knowledge to do YouTube commenting (6) effectively is remote. if they are already in the HiFi business then they have (7) agendas.
YouTube is about ’click-bait’......so they have to be controversial or turn over gear quickly to keep attention from subscribers. both those approaches are not really what most serious audiophiles are interested in. sure; hifi newbies do like to be entertained.......which is the relevant audience for this stuff.
i’d rather look to fellow hobbyists or reviewers i know for feedback, and reserve YouTube for entertainment and real world ’how-to’ info.