To doubt the substance of the official report makes one neither xenophobic, nor even anti-Concorde or anti-Air France. Two ex Air France Concorde aircrew (Jean-Marie Chauve and Michael Suaud) have presented their own report to the French judicial enquiry into the crash.
I haven't seen it or found it on the net, yet, but understand it includes the astonishing revelation that the aircraft didn't hit the metal wear strip until after the tyre blow out!
They also point out that had acceleration been normal, the aircraft would have been airborne 50 yards before reaching it.