Although I have not read or seen the article I can honestly say that after many years of taking mostly Americans hunting/stalking in the UK and Africa I have only had a handful that were a problem.
99% of my clientel are American, and I have been very fortunate to have made some great friendships, had some great times. Most Americans are good hunters, ethical, honest and also fascinated by the amount and variety of deer we have in the UK. They are also taken back by the amount of wild countryside still to be found in such a small country, and of course the history.
Most have a good sense of humour, and all round I have little to complain about. But maybe I have been lucky? On the other hand I know a few English people who I wouldnt call hunters/stalkers, and we are all aware of someone like that I am sure. In general I find that with most hunting people there is a common bond, no matter which country you come from.
Long may it remain so.