WK:
The report's summary indicates:
alternative conclusions are either rejected by the data, or required that the aircraft had been piloted in a manner that is unusual or unlikely
I would suggest that any major event similar to the many that have occurred with this aircraft type is highly likely to have required the aircraft to be 'piloted in a manner that is unusual'.
I would also expect any document emanating from the manufacturer not to highlight any possibility that the aircraft was at fault, just as any document emanating from MOD would ignore the ongoing airworthiness issues.