Doug, I think you're being a little unfair
Certainly the picture is pretty ugly and I'd hate to carry everything round my waist but the idea of bringing only a minimal number of ultra-lightweight trail running gear items is one that the majority of Camino walkers should start from - yes, he stays in hotels (as I tend to) but sleeping bag liner plus towel plus flip flops is perfectly fine for albergues over say May-Sept
I have walked the Norte with a 12L pack (
http://www.runandbecome.com/item/Gregory/Miwok-12L-Running-Backpack/7ZN) that has all the features of a proper pack - excluding liquid the weight is around 2.5kg - I have carried up to 4L of liquid in addition though 2.5L is a more typical maximum
I bring 1 pair of walking shorts, 2 underpants, 2 t-shirts (Merino icebreaker cool-lite), 4 pairs of barefoot socks, 1 Berghaus rain smock and a Lowe-Alpine hat that covers my neck as well plus my trusty Merrell trail glove shoes - if I walked in April or October, I would add my Berghaus hyper therm jacket and gloves and a warmer hat and maybe long trousers instead of shorts
A good description is that we're treating it as a series of summer day walks across a country that is predominantly warm but with occasional heavy rain - as opposed to an expedition to Everest - and we bring only things that protect us in the most probable circumstances rather than covering all possibilities