It seems to me that the phrase "guerrilla training camps" would have been quite the red flag, since that term was not used at the time Fat Ginger-haired Georges was in England.
It also seems to me that folks spend an awfully large amount of time in the weeds of history, flailing around trying to prove who was the best and the worst, who paid whom how much to do what, and so forth and so on.
Maybe I'm just a simple historian--too simple, some might say--but to me, Georges Cadoudal was a Chouan who went to England for money to assassinate Bonaparte. As far as I know or care, he could have learned his skills in a pub. Adding the training camps, which is indeed likely untrue, is unnecessary. The PRO [or whatever its name is these days] had enough documentary evidence that Cadoudal was in the pay of the British government to make inaccuracies about how he was trained and where irrelevant.
At the end of the day, all Cadoudal's assassination attempts were inept and failed. Embarrassingly so...