What bothers me is the people who blog about how to make money by blogging only make money by writing about how to make money by blogging. I get this strange feeling that you can't make money by blogging about something else.
The same thing bothers me about Steves personal development theme. His purpose in life is PD for himself and others. Of course PD is important for everyone, as a toolbox, but PD is not the highest purpose for everyone. Not everyone can live on doing PD for PD's sake, most people need to apply PD for something other than PD.