Just like a narcissist to write a post about himself. <grin>
Yeah...
Also, advertising.
"The fact that I did a lot of research on narcissism provides me with a side job that I make money from. I can help people that have problems related to NPD, or people being victimized by someone with NPD, and help them deal with it."
It seems pretty clear to me that the author is not the person who's answering the questions.
EDIT: I see what you're saying, but it would be more strange to answer questions like that than in the first person. I don't think I've ever read an interview where the interviewee didn't respond to questions in the first person.