...it was negative attitudes such as the one above...
My attitude isn't negative at all. I think it would be quite something to see Concorde in the air once more. But it's no more deserving of airworthy preservation than several other aircraft - such as the TSR2.
I despair at those who think that their total contribution to the effort should simply be a couple of thousand signatures on a piece of paper. Signatures amount to nothing - a petition is just a cheap way of avoiding responsibility for dealing with the problem by handing it to the Government.
It's this delusional attitude, the product of an apparent inability to accept the realities of the situation, which will keep Concorde firmly on the ground.