yea, thats true. i am not sure, and frankly dont know much about skin and science of hygiene. it does make some sense... and it wasn't about not washing at all - my pardon at a bad interpretation - but it was that excessive, (once a day or more) washing doesnt let skin oil serve its role. According to the article, it takes 10-20 hours for the cover to refresh.
And yes... it is mostly about soap. Washing with water isn't bad, they say.
I dont know whom to believe
it makes sense in its essence, but mind opposes to such a simple solution to all humanity's problems.