Yes. Exactly this. Why are many people doing this (not a criticism).
My shampoo ran out and I thought there’s no point in buying more at the moment and remembered, of all people, Take That at their peak in the 90’s saying on a chat show that they didn’t use shampoo and you could almost feel the shampoo companies cringing.
It’s been a week now and looks and feels no different to when using shampoo (not that I have much hair) - but why has a global pandemic prompted people to sort of collectively think / act like this?