No what I mean is the FAA has a very easy registry search, and then I go to any number of FOSS aircraft trackers and I can now find the aircraft by redgistry number. that took me what 10 minutes and I was done? no need for an app. The FAA does it because its public information the plane trackers do it because plain spotting is a genuine hobby (and public information) I am someone who holds this hobby. So taking this app down does basicly nothing, it turns 2 simple steps into 1 simple step
Ontop of this, it is unreasonable to send a LEGAL team out to send a threat when no laws a broken, in some states that is an illegal act, a request from her to stop sure is reasonable (and its reasonable for him to refuse).
While yes it will likely remove public access that is more so because that is what capital has been wanting for a while, not only that but I would argue that this is part of the intended use case, to keep track of who is using our air ways and how often. Just because its not often thought of does not mean it is not right proper or intended.