The first point he makes is about how Mark said fiber is not essential, and is likely damaging, then links off to half a dozen sources which say it's beneficial. That's just standard dogma - fiber is only "good" for you on a crappy diet as it helps get it back out of your system. Beyond that fiber is just there to cause damage.
The second point - "You can in fact get pretty much all of your vitamins and minerals from other sources. However, this puts a fair bit of pressure on you to eat a wide range of food items on a daily basis." is completely untrue, you can get everything you need from surf n turf, wide range of foods required my ass.
#3 - yep, they ARE pointless.
Beyond that it's just arguing for argument sake, we don't and probably will never know exactly what our ancestors ate and when, but we're pretty damn sure our current state of evolution just isn't up to consuming what the authorities tell us we should be.