This is a very interesting article indeed. Now, that’s not as if Lean or Agile practitioners wouldn’t shield workers and developers from incessant perturbations. We know that already, albeit we’re only practicing it for certain categories of workers (line workers or developers for instance), and not for the rest of the organization.
When you’re going for optimization, do it to the whole value chain, not just where value is added. And while you’re at it, remove that which doesn’t bring value at all. Hint: there’s a hell lot of stuff that might qualify as “work” but which is not adding value to your customers. It’s most probably bugging your employees and destroying their engagement.