So you are saying Stereophile receives gifts @axo1989 ? Virtually every review site seems to get them. Unless he is selling them on Ebay or similar, calling it a gift is really an extreme stretch in an attempt to discredit.
I think you should post links to these supposed Youtube videos as the only one I could find was a "coached" video, 4 years old, when he was getting a new model of analyzer. You really are stretching to discredit.
Formal training? I did a lot of medical research. Formal training on equipment? I expect it is no different from the Audio Precision. An afternoon or maybe a day with the vendor. This is not something you go to school for. Life saving hospital equipment was a different matter, but equipment used in research? Just another sloppy attempt to discredit.