I just wanted to add my 2 cents to this discussion.
In my outings I have run into many of these paparazzi myself and have been really unhappy with their behaviour. There is nothing worse for me then trying to stealthily approach a bird, or sit quietly waiting for a bird to come to me, just to have someone else stomp up behind me scaring my subject away. However, last May in the wet woods I ran into many birders, mainly on weekends, who were much worse than any bad photographers I have run into. These people were crashing through brush and yelling to each other and I couldn't understand how they planned on seeing anything when they were making so much noise.
In the two years I have been concentrating on Bird Photography I have met many amazing birders who have taken the time to educate me and I would never put them in the same category of birders as those weekend warriors who showed no respect for the birds they were chasing. Likewise I hope that people don't lump all photographers into the same group either.
Paul