I could talk vaguely about allowing for more infrastructure development by cutting planning red tape but I don’t

"I could actually answer your question, but I won't"

It's not hard. "Even if you don't need new housing, building more housing means more economic activity that funds the government through already existing taxes to do things like hire dentists."

I'd feel some sympathy if this guy's only option was to explain Modern Monetary Theory to someone who's probably been indoctrinated by years of "the govt budget is just like a big household budget" rhetoric, but this is easy street.