He sounds the same as Suze Orman. She expounds the same advice as every other financial "expert," but since she's charismatic and somewhat attractive, she gets TV shows and infomercials and Emmys and everything. (Supposedly, she's the most powerful lesbian in New York, but I don't know if that's true).
Anyway, I only have one credit card, with a rather low credit line, and I pay off my balance in full every month. I've never once paid any interest on anything I've bought, which is good for me, but bad for the CC company, because they don't make any money from me. But they keep raising my limit in the hopes that I'll spend more and more.