No doubt many Inspectors would feel the same as R&W on this issue, and that reduces even further the chances of the fictional father in this scenario actually getting nailed by the FAA. But that is still not a guarantee of safety from an enforcement action if the wrong Inspector or RC gets involved.
Time for a reality check.
Let's assume for a moment that an Inspector goes after the OP scenario. Once he has his facts he goes and meets with the FLM (Front Line Manager) or even the Office Manager. He presents his evidence and request to open an EIR (Enforcement Investigative Report). To do this his supervisor (FLM or OM) has to open an EIR file and assign it a number (national database). Now the genie is out of the bottle because once this is opened you can't simply close it.
The supervisors are on what's called "Core Comp" pay which is performance based. Each year they are reviewed by region and given pay increases based upon their job proficiency. Mr.OM knows that if he clutters his "dashboard" (computer based program that tracks all office activity) with needless BS it will now get questioned his judgement and ability to run an office.
So either supervisor has zero incentive to go tilting at windmills, especially those that there is next to zero chance of getting it to the Regional Counsels office. Also the last thing they want to do is open an EIR and put this turd on the RC desk only to have him kick it back. If it does get kicked back now the supervisors have to figure a way to close this without looking like idiots.
Let's also look at the Regional Counsel and his take on this. He already is short staffed and has more in his "in" box than his "out" box. No way is he gonna put some turd like this on his docket since his chance of successfully completing this is about nil. He has bigger fish to fry and chasing some guy on a frivolous violation ain't gonna cut it. And, just like his supervisor friends at the FSDO, he's core comp pay as well. Think he wants the Regional Manager to see him wasting time chasing something like this?
Something like this doesn't even warrant a SNAAP (Streamlined No Action and Administrative Action Process) which is essentially a warning letter generated from the office, kinda "EIR Light".
Now lets talk about Inspectors and Chief Counsel letters and "interpretations".
Inspectors are not expected to follow and study all of these Chief Counsel letters. The only time this gets brought up is during STRING Training at the Academy in a course called "Enforcement and Compliance" (which is taught by various FAA Attorneys). They show you the website and how to access it, bring up a few interesting cases and that's it. FSIMS (the version Inspectors use) has the links and access.
The Inspector's job in an enforcement is to be an Investigator, to gather information and facts, write an EIR (which is lengthy and detailed) and have the office submit to the Region Counselor. If in Part B (Summary of Facts) of the EIR the Inspector starting citing Chief Counsel letters or "case law" it would immediately get removed by the supervisor as not being relative. Same goes with Part D of the EIR (Facts and Analysis), the Inspector cannot start citing CC letters.
Inspectors are not attorneys and are not expected to act as such. Never, ever have I participated in nor do I know any office that gathers Inspectors in the conference room to have discussions of the latest Chief Counsel letters, it simply doesn't happen. I cannot imagine an Inspector going into the OM's office and saying "Sir this pilot is operating against the Mangiamele letter and I want to seek an enforcement against him!"
Like I said earlier, do something as dumb as that and you'll find more "R" items added to their work program as they obviously got way too much time on their hands.
I didn't build the windmill, only quoted the Chief Counsel's interpretation of the rule covering it when asked. OTOH, if you're talking about arguing with EdFred, then yes, I think you may be right.
No argument with Ed as I agree with him.
You didn't build the windmill, but as a Don Quixote you certainly take aim at them.