If you read the reports, they are able to deduce that he deliberately crashed the plane by the fact that he would have had to prevent the pilot from accessing the cockpit by actively overriding the pilot’s ability to enter a code to open the door. No sounds of struggle at all, other than the pilot trying to bash his way into the cockpit later, just the sound of Lubitz breathing. If it was a medical emergency, Lubitz would not have actively denied the pilot entry. One must read.
We are assuming many things with that bit of info, however.
They immediately report that the “breathing was normal” and, ipso facto, he was perfectly healthy. Nonsense. LOTS of medical things happen and still one can breathe normally, untinterrupted.
This assumes there is no way to accidentally hit a switch. However, unless it was placed in the optional position, the switch is located by the throttles, easy for a body or just a dangling hand to hit - and it is only a 1-position switch, to boot (not 3, which I would think would be better).
Furthermore, looking at the emergency-door video on this plane, they seem to say that there is a special code for outsiders to override ANY locking situation. How about that? (I may have misunderstood this part of the film, but I think that’s what was meant. They showed both crewmen passed out as a possibility, with the door “locked”, but the stewardess punched in a special code to get it open.)
So, again, I want ALL info out and that takes more than 1 day. Air investigations always take much longer than 2 days. Analysis takes much longer. None of this would stand up in court.
It is just plain totally irresponsible of the French authorities to mouth off within 24 hours as if they know so much. Nonsense.