I have now had the opportunity to read a spirited defence of the report by someone who is very close to the two authors, quoting one of the reports author’s correspondence to him. As this appeared on a closed railway group (Southern email group) I am not sure whether it would be appropriate to copy it and post it here. Perhaps one of the mods could advise.
I had that quandary earlier in the thread - looking to discuss the matter but not publish them. And I wrote:
Suggestion - follow up on that same "back thread" ... post a similar pointer here so that Transport Scholars know to look there for backup data to the points you 've gone on to make in the rest of your post.