I think there is a big diffence between true fans, like those in the audience, and the tabloid reporters out to make a buck by taking pictures.
Michael was giving the fans what they had wanted, and that was to see his son. He did it on his terms, from a distance. He was simply letting them see his son, though may not have been the best way to do it. Having those reporters chasing down celebritites is a whole other matter.
Just ask Princess Diana.