I think the "thou shalt not speculate prior to the AAIB report", is a little hopeful and naive for an internet rumour forum is it not?
However, it is neither speculative nor insensitive to query an aviation fact on here, post accident IMHO (if it is...seems to me this site is pointless).
So, did this unfortunate chap qualify for his RAF wings of not? (not only a fact; a polarised yes/no fact as well).
If he did not...the inference that he was a military pilot is flat wrong and misleading. It should be rebutted.
I don't know the answer; hence the question. There seems to be some doubt in the articles I have read, including his obituary in The Times.
If he wasn't, I am not implying any follow up notion that his abilities were anything other than they should have been to undertake this type of flying (so don't imply please that this is a fishing trip - coz it ain't!).
I'm merely trying to answer a yes/no question.