I don't think it's a bad list, it's a good starting point if someone wanted to give this a go, but there's no universal one size fits all capsule wardrobe. We all have different lifestyles, live in different climates, and have different preferences.
I'm more of a fan of having a good basic wardrobe, ie having a good range of pieces that are easy to mix and match together, be it 20 items or 120.