Isn’t there an FAR prohibiting formation flying with an aircraft without permission from both pilots? Secondly this whole cozy setup between the pilot and controller is somewhat reminiscent of Deliverance. I think it’s a fair statement this individual is a classic example of a guy who’s been flying at this particular A/P for a few years and has acquired the attitude that the field is his personal playground. Unfortunately and no doubt like many others I’ve met such people who seriously seem to believe they have a right to know who is doing what at “their” field irrespective of law or even common sense. But as the saying goes, they’re everywhere.