I agree with you, Curtis. I'm sure some bloggers have "faked it" and succeeded, especially back when there was little competition, but the vast majority will not. It's like you said -- if you don't have personal experience, then you sound like everyone else.
I addressed this issue a few months go in a post called "Too Much Information!" Basically I was whining about how there are too many web sites (particularly in the PD field) talking about the same thing and almost nobody is unique, so I need to consciously ignore most of them.