I would compare those who advocate such outright borrowing without committing to credibly repay at maturity to people who fall for teaser mortgage rates and are rather negatively surprised to see the rate adjust later. It is interesting though that there seems to be a large positive correlation between people who advocate government borrowing because rates are low NOW, and those who call for protecting consumers against reckless lenders who tease them with a low temporary rate. To quote a famous Canadian singer, Isn’t it ironic?