He forgot to mention the increased pad wear that occurs whenever you launch a rocket more than a couple times a year, or once every couple of years. A launch can be devastating to the paint, allowing the pad to start rusting. But the protective rust layer will get blasted clean with each new launch, eroding the steel. If you want your launch pads to last, best not to launch at all, much less with the insane frequency that SpaceX is proposing. They're just crazy and irresponsible, giving no thought to the time that's supposed to go between sanding, priming, putting on the first coat, and then second coat. Their launch pads are always going to look like sorry flaky rust buckets.