I love how people who have never been there are arguing about this.
Often times you will have up to a dozen people hanging out on the side of the road with the photographer. Generally there will be several cars and bikes parked there too, often right on the edge. People often run from one side of the road to the other. If you watch enough of the videos, it's obvious that the whole situation is very unpredictable and can be very distracting. Hell, I've seen a photog lying in a middle of a lane trying to get that awesome action shot.
Personally, I don't mind the photographer. But the fact any given time you have a dozen idiots who might step out in front of you, or pull out in front of you is very fucking annoying. Not what I want to think about as I am lining the bike up for the apex.
As with all distractions, they can increase the likelyhood of a crash occuring.
Does everyone who rides by rnickeymouse crash? No.
Do a higher percentage of riders crash here than on other roads? Yes.
Also, keep in mind that hundreds, if not thousands, of riders take that corner every Saturday & Sunday. Film long enough and odds are that you will end up with some good footage for us to argue over.