Maybe its is just that the crew of the other aircraft in the vicinity feel no need to "share" their observations (if any) of the events with the general media or PPRUNE.
When that bizjet crashed at Blackbushe in the UK a few months ago the AAIB's initial statement of known facts a few weeks later mentioned a change in the circuit pattern by the jet to accommodate a slow flying microlight.
This was the first anyone had heard of the presence of a microlight and those flying it have never made any public statements - though I'm sure they have made one to the AAIB.