Whippersnappers are just more comfortable with electronic means of money, especially as stores of value, as that is that they grew up being familiar with. So they are driving the change to the existing order. It’s virtually impossible to quickly or easily sell real estate during a major crisis, lug a bunch of gold coins or bars across borders manned by government thugs, etc..
Stocks rely on the same legal coercion that fiat does, so that isn’t appealing as a way to diversify sovereign risk which hyperinflation is one of the worst outcomes of. The allure of Bitcoin in its initial genesis was that it didn’t rely on such potentially bad actors for its value, transferrability, verification and immutability. That is the revolution. Where we’re at now with coins seems to be basically a fixed supply combined with the usual behavioral issues. It’s different than shares which can be issued in virtually unlimited quantities as was done back during the dot.com bubble.