Not crashing yet. The article is looking 1 to 5 years to come.

Given Nvidia's CEO's agitation I would give credit to the prediction, and if it's correct the price will go back to what it was, or even lower of investment in capacity are made today.

My take is new capabilities will consume any price reductions, making them moot. At least in the medium term.

A RAM price drop due to some magic efficiencies assumes everything else doesn't change, which I doubt anyone honestly thinks will be the case.