When an user reports buggy or glitchy behaviour I usually don't write it off as cowardice.
I had the same problem in the auto industry. Some times the test drivers were accused of imagining things or sabotaging when the problem could not be recreated.
When your software crashes in a house it hopefully doesn't kill the whole family. Comparing the expectations from a pilot and squadron commander to a random user of a random software doesn't do any favors to the pilot and suggests you misunderstand the magnitude of the difference.
Even in the follow-up anecdote from the auto industry, a car test driver has vastly different profile than this pilot. They inherently work with untested vehicles and software, where the manual was not yet written. This pilot just followed the broadest interpretation of an existing manual.
I had the same problem in the auto industry. Some times the test drivers were accused of imagining things or sabotaging when the problem could not be recreated.