This talks about higher interest rates due to investors being reluctant to purchase US government debt, which is not something we've observed recently. It doesn't talk about higher interest rates due to deliberate action by the Federal Reserve, which is something we've observed recently. Mortgage rates aren't up because of debt, they're up because the Fed raised rates sharply 2022-3, as you can find on a different portion of the Forbes website: https://www.forbes.com/advisor/investing/fed-funds-rate-hist...

I'd actually missed or forgotten the paragraph you quote, but in context it seems pretty disingenuous, using a hypothetical which smoothly transitions to present tense to imply that the debt bogeyman is to blame for what Roy knows very well are actually, in the last few years, consequences of attempts to combat inflation. This only makes me more doubtful of his intellectual honesty.