I asked my original question about texting because it seemed to be an unnecessary distraction.
I studied the AAIB report a bit further, and found a meticulous investigation, but a disappointing set of Recommendations, often the case in my experience.
There seems to be a general feeling on the forum that the pilot was not acting in a professional manner, despite his experience and general competency.
The AAIB have chosen to ignore behavioural issues completely in favour of plodding obstacle rule making improvements and so on.
This could have been an excellent opportunity to have made an attempt to get to grips with what appears to be a significant industry wide problem, but the AAIB have rather let us down.