...what? She is a professor of CS & Engineering according to the byline in the article, and upon Googling her, I find no reference to her teaching economics or any other non-CS/Engineering discipline elsewhere. And unless ctrl+f is failing me, "econ" isn't mentioned anywhere in the article (except "economically" once in someone else's comment) or in this comment thread. So I have no idea what you're talking about.

She talks about econ and, as you diligently pointed out, that's not her area of expertise, exactly. OTOH I would assume that a professional does have a clue about adjacent topics.