It doesn't matter how easy the search is to you or I... The people who have found this tool (or made it, I don't know. Don't want to accuse the student of anything untoward) are distributing it to people who would have otherwise:
never even knew such a possibility exists,
had no fucking idea how to even begin finding that information themselves regardless of how simple it may seem to you and I, and,,
not have even had the idea to use the information that way in the first place.
This is basic transparency on the part of the FAA. They disseminate this information to keep track of things, and for research purposes. It was never intended to be used in this way.
In fact, if anything significant comes out of this, it would be to limit what info the FAA makes public (and it will skew toward private jets of course). So in the long run this will probably have the opposite effect of what you want.