It does make sence in a way, but it's worded very badly (and should not just focus on digital either). Photographers with SLRs do tend to take a lot longer getting a shot than most people, and the more professional they are the worse they are. I have to admit it's annoying enough at events having to wait for people taking ages getting the perfect shot with their SLR before either being able to get your own shot or actually move without having someone having a go because you get in their way whilst setting up their shot or get on one of the 100 different shots they take of the same thing. From a point of view of private locations there is also the issue that many people like that will have commercial interests. Generally those taking photos for their own use won't mind if it's not perfect, but those who want to sell them on or upload them to paying internet sites will. Oviously it's something the owners don't appreciate, people making money from their property.