I'm actually correct about everything assuming you weren't there and have zero idea if how this happened.
While it sounds like it happened straight up, we have no idea if he was misled, lied too, or just acted like a retard and did it again because he wanted to.
I can also show you a bunch of ground here that is claimed as National Forest but, is as private an my living room. This shows up on Gaia and USFS maps. I've never seen a On X in these areas so I can't say for sure. But, I am pretty certain they don't have on the ground people in WV and VA verifying county tax maps as correct.
These mapping programs you guys are pitching as the berries are only going to be as accurate as the local assessor's accuracy was when he produced the tax maps. They can be precise or way off. Depends
I spent 21 year working as a forester. Finding property boundaries was as essential to that as bread is to butter. Not being a wise guy but, real estate agents around here know about as much as doughnut makers concerning property boundaries. How they are established, what a survey is versus a tax map, and how to locate them and validate their accuracy. Not saying that is you. Just saying that has been my experience