I don't think it's aesthetics vs usability that's at the core here -- I don't think at all that aesthetics and usability are somehow mutually exclusive. I think it's simply the lack of focus on first principles outlined by Don Normal himself.
HCI used to be front and center in the collective minds of the Internet, but it slowly faded to the background. As an example, check out the dates on the articles referenced in the "Mystery Meat Navigation" Wikipedia article: https://en.wikipedia.org/wiki/Mystery_meat_navigation#Refere...
I think it's neat that our affordances are evolving (we don't need to have things looking exactly like physical buttons anymore for us to click on them). But at the same time, we should still apply ergonomic guidelines when designing interfaces, whether it's for the elderly, or not.