Umm..well since we are into opinions here’s mine…over the years I’ve:
Shared crewrooms with a couple of individuals who went on to be in the reds.
For a time worked alongside them every day, and for example attended the same met brief, as duty dog sat in ATC visual during some of their work up.
Went to the funeral of one thoroughly thoroughly nice guy and long time friend who was killed during pre-season training with the team.
Then in the civvy world worked with (including doing a type conversion) alongside a couple of ex-reds.
In the basis of the above I’d say there was the odd loud/awkward/PITA individual but generally the 10% rule applied,I certainly wouldn’t subscribe to some of the stereotyping offered by one or two previous posters….