Sad that he has to resort to this. This is very rude and unprofessional.
I’ve removed his plugin I was using and wrote my own for all my customers. Too bad, as he would have received several sizable donations for his work as I do appreciate the time and effort it takes to develop something.
I to vote for his plugins to be removed from the wordpress catalogs until he stops this rudeness. He is not only ruining his own reputation, but he will start a precedence that will ruin wordpress because customers will not appreciate seeing stuff like that on their own sites and will dump wordpress for another system. Other developers that are money greedy will start doing the same thing as Dennis if its not stopped now.