That's pretty, well, bad advice IMHO. I can see lots of players simply shrugging and responding with "We'll quit being boring as soon as Joe Fighter finishes healing."
Better advice would be "Use the wandering monsters tables religiously."
If the DM did that to us, we'd probably quit on the spot. We aren't dumb, and can see when we're being railroaded into a course of action. That isn't why we play a game of D&D. The players choose what their characters do. If the DM wants, he can put in a house rule, sure, but then we're back to the fact that the default, Basic D&D game has an exploitable short rest issue in the most basic class of the game, and people are telling us to ignore it or play around it instead of telling the devs to fix it.