I was heavely involved in the flight sim world a few years ago. We had a supposed airline pilot who talked with great authority and detail.
Many stood in awe at his postings until the cracks appeared. Often they were tiny cracks but obvious ones.
He turned out to be a kid who was great at research and googling and fooled many for a long time.
I have not noticed such cracks in Guppies knowledge? The only cracks if they are cracks are the shear volume and diversity of his flying which often made you wonder how he ever had the time for such long postings.
Flying is full of type A egos and I can think of quite a few captains who would be equally direct and challenging
Regardless the detail he brought to these forums, the colour and contributions he made will be sadly missed who ever he was or is in real life.
I personally dont think he is some Walter Mitty.
I have to also say he had a remarkable way of cutting other egos and supposed know it alls in these forums down to size which isnt always a bad thing
Pace