The FAA does not publish a statement that they will not take certificate action against various infractions. Thus, there is no formal FAA announcement that you are immune.
The first clue is that the 107 certificate is not included in your regular certificate.
It is separate. That is not true for other certificates,
For instance, when I got a private, then commercial then ATP, then a number of type ratings, they simply reissued the certificate.
When I got the 107, they issued a completely different certificate.
They did not add the 107 to the ATP.
More to your question, I am am an airline guy, and the question comes up frequently, on various airline pilot message boards, because nobody is willing to risk their livelihood to some knucklehead accusation on a drone issue.
Many have talked to the FAA and many FSDO's, and the repeated response is that they don't care that much about drone stuff, and won't jeopardize a pilot certificate for a drone issue.
To my, and many other's knowledge, they have not, and that information is from very large airline pilot's unions message boards.
Thanks for providing details. The FSDO response should be trustworthy, but I think it was an FAA statement that I first saw indicating that there could be repercussions to other ratings. I'll see if I can find it.