I rarely buy into these stories of peoples impressions of celebrities when they meet them. You simply never know what causes them to act the way they do. Sometimes there is a legit reason, and sometimes, the person who is meeting them, and expects them to be like "oh wow, a fan, thanks so much for all of your support" don't realize they are the ones who are being rude, and it doesn't come across in the story.
It would be one thing if Rondo was like "Sorry, I only take pictures for money", but this story simply doesn't make sense in a vacuum, and makes me think there is more too it (maybe he has a phobia of camera phones...). I just wouldn't read too much into it.