With regard to camera recordings at high contrast levels such as sunshine and shade, it is worth remembering that even the very best cameras only cover a fraction of the dynamic range of the human eye. Even though a camera may not clearly display instrument readings, they might still be perfectly visible to a pilot.
AAiB reports are not intended to assign blame, merely to identify the cause(s) of an accident with the aim of preventing the same thing happening again. Given the detail contained in the report and the extent of the investigation, it is obvious that some of the content has been deliberately worded so as to present a neutral view. Taken as a whole, the report is quite damning in its conclusions, although for the reasons given, a great deal of care has been taken to ensure that no direct blame is assigned to any person(s).