Alty Meter - take your points but if you display in public and crash in public every tom dick and harry is bound to discuss it - that is not being disrespectful it is merely their reaction to what they saw. You do not need to be an informed display pilot to comment on what you saw. I do, however, agree that opinions on the actions of those involved are quite likely to be considered offensive.
I am an ex-display pilot with relevant type experience and I have been informed by this thread - not just from those you consider entitled to an opinion but also from the general public who saw what happened and gave their opinions. It is not only display pilots who recognise speed or lack of it, nose attitude or roll direction and it is not only display pilots who witness accidents and provide evidence to the board. Let us not stifle the airing of information but do all we can to protect the interests of those who perished.