The whole point about appropriate training is that lessons YOU learnt in operations over many years can now be included in the best initiation lessons so that we can inculcate good habits to individuals which maybe the rest of us never experienced; isn't that a good idea?
Yes it most certainly is! You never stop learning from the mistakes of others, but perhaps as, if not more importantly, you learn from your own mistakes. There are very few pilots who will not have a story to tell of the times they frightened themselves and learned some cold hard lessons. The problem comes when these low experienced pilots who are themselves inevitably going to make similar serious lapses of judgment do so with 200 other people bolted onto the back.
Experience will come to everybody eventually. The flight deck of an airliner can be an artifically comfortable environment where the world waiting to bite you, can seem a lot further away than it might really be.
It isn't the CRM or training course aptitudes that bother some of the more experienced contributors ( or bigots?) It is the fact that such low experience levels probably mean you haven't had the opportunity to frighten yourself yet, but one day you will.