His displays were not recorded. No one has said they were non-existent.
The climb was commanded by the FC, via g demand. Why would you expect to gain instantly 15 degrees in the sim in AL2? It took the time the computer deemed necessary.
His working theory was O-Speed, not climb. You are assuming all manner of things here, I do not have the cement thinking you do. The Stall was entered unusually, not that that would have helped them determine they were stalled. You are conflating what happened as you see it, with some need to condemn the Pilot(s) for missing something you see "clearly".