First of all let's deal with Americans. You've obviously never been to some of the parts of the US that I have. Try driving in New England, the Ozarks, Appalachians or the Rockies. Long straight roads? I don't think so. And I can assure you that the laws of physics apply just the same in America as they do here.
Now your allegation that films such as this are set up to produce the result that they want. Why? Why would responsible motoring organisations, motoring journalists and tyre manufacturers deliberately give the wrong information? Information that could result in deaths and the inevitable law suits. It simply makes no sense. They will not sell one extra tyre by this advice so no one can claim that it's some kind of cynical marketing ploy.
I'm trying to give advice here that may save a life. Advice based on the very latest research and experience not on what we thought a generation ago. You on the other hand seem to think that it's right to ignore this advice and to try to persuade others that you know better than all these experts.
Do you know better that the AA
Tyres : Car tyre safety advice - The AA
Or major tyre manufacturers, Kleber
Fitting your new tyres or Dunlop
Dunlop Tires | Care & Maintenance | FAQs
Or a major tyre supplier
Tyres fitted to the safest possible positions | Hometyre | Mobile Tyre Fitting Services
Or any other of the vast number of experts, racing drivers, tyre manufacturers and car makers, all of whom disagree with you.
As I said, it's a free country and if you, for whatever reason, feel more comfortable with your shallower-tread tyres on the back that's your prerogative. My advice was given in good faith and may save a life, especially amongst those who motorhome in the winter when roads are slippery with rain or ice or snow. The films that are available and the advice given makes clear that the chances of losing control are much greater with the method you choose. Most drivers are not experts trained on skid pans and it is vital that their vehicles are set up in order to make skidding as unlikely as is possible.