Knowing how people are trained in a different system is irrelevant in my eyes as a JAR/UK instructor.
I initially trained in Oz, where things were very different, especially from the airspace and navigation point of view.
Was I arrogant enough to think that I didn't need difference training? No. I knew fine well there were some major changes, so I tried to learn as much about these before I started flying in the U.K again.
In the U.K visual Nav is just that, I doubt whether it's any different in the US. They may have more beacons, but I doubt the FAA system doesn't train people in the basics of navigating without the use of aids.
It is just laziness that makes people ignore map reading over following a VOR track. If you had an IR, I could almost understand it, but a basic PPL. I don't think so.
I don't hold with any them or us argument, so I can only speak from experience, exactly what I think BEagle has done here. rather than from any bigoted standpoint.