And some who criticize can themselves do exceptionally well. I know these videographers are amateurs, and the difference between them and the pros that I work with is that the pros work hard at creating a show, critique their work mercilessly and the work gets reviewed almost daily and those reviews are unstinting. And all of that is in service to providing their audience with the best product that they can offer.Those who can, do. Those who can't, criticize.
There are some in the YTPC who make a serious effort to offer something to others, and there are the majority who clearly don't make an effort because it's all about themselves and there's little to no awareness of their audience.