Hi BV,
I am using FDR as a generic term, as in Flight Data Recording. Yes, there are different systems.
As I read the report, this was an early rotation issue, leading to unstick well below target speeds. How would anyone know you ask? Same as any other pilot skills...look for what is done on line ops. I am not going to describe how they should do that on your jet, or any other, that comes down to specific types. However, the routine flight data recording will include control inputs, AOA, speeds etc. It is not difficult.
Do I detect a little resistance to data capture and monitoring? I strongly suspect that it will come more widely into FJ ops, if dudes keep throwing $400,000,000 jets on their bellies. Cheers
OAP