Interesting topic! It's good to see such a proffessional response, however it would be better to have response from management rather then pilots, after all managers don't get hurt in an accident pilots do.
Over the last 20 years I have seen safety develop in a good direction, but lately it seems that the basic priciples are being re-discussed. New managers, new mistakes and again we must re train our management.
Safety culture is like any culture the collective achievement of a group of individuals that characterises freedom form injury or risk. like so many cultures it's the persons at the top that can influence culture (albeit only in a negative way)
My experience is that a 100% confidential system is the only working system!