Personally what makes me question the WIB article is the fact that they quote a total of about 7 statements, including just ~3 word phrases, from a 5 page report. Considering that the report refers to specific flight regimes "There were not compelling reasons to fight in this region.Ē, it seems to me that WIB are leaving quite a lot of the report out of their hit-piece. If they want to spill the beans on the program, why not cut out sensitive information and release the whole report? I'm sure that if we knew who the test pilot was and asked him about the article, he'd have a lot more context to provide.
The report is a hit-piece, but the question is if the dog-fight did occur and was the F-35's performance, vs. the F-16, sub-par.
There is quite a lot of detail missing, though. I wonder if the provider asked that the report not be quoted directly, but instead be quoted indirectly. E.g. here is proof of the report, use it but don't quote it.
Again, what is with this 'expecting the name.' Nobody is going to get a name here, as this is Washington, and these are the journalistic rules of the game. Anonymous sources speaking off the record. You either trust them or you don't.