Posting videos is risky because people can then judge on sound rather than just words. Later words might then be ignored. Interestingly, dealers who want to sell, post videos. They must think there is some merit to them. It is not easy to write about sound.
It is much easier to state experiences in words and claim what someone heard it at home in his own system, then people have no choice but to respect that, as what the writer says with his limited experience is then supreme