The reason for the distribution of the videos may be because %99 of the overall motorcycle population filters, while %1 doesn't. Which one of the cases should be producing more videos ?
And yes one can compare California, simply because they had to start somewhere. No one argues that filtering in Ontario can be implemented overnight, but I would argue that an average driver of Ontario has ALL necessary skills to accommodate filtering motorcyclists, specifically the skills to change lanes safely (signal, mirror check, shoulder check..).
Regarding the radio show, especially in U.S, they will say anything for the sake of ratings. It shouldn't be too hard to find a talk where they discuss banning of all motorcycles because of their danger.
I presume that you're talking about California. If that were the case, then presumably we would see a goodly number of collisions in which filtering didn't seem to be the proximate cause. That doesn't seem to be the case.