Actually it is very good journalism. That Hyper-overreactive title got us all to read it. I think large vehicles are often under-rated as to speed. Ever watch a 60mph freight train approach? You would swear it was going a lot slower.I think that you should always do a double look at large vehicles.
As for bikes, their small profile causes the problem there. You see them if you look twice also. When bikes ride in large groups with no spacing they do become just like 1 large vehicle and are very hard to judge. There is not one of us on here that has not judged passing distance incorrectly a time or two, and have been saved by the overtaken vehicle(s) slowing to let us in