I think it can happen if bitcoin holders don't want to sell their bitcoins and hold them long term.
if the market runs out of bitcoin then buyers and sellers will turn to altcoins to trade, this will make bitcoin meaningless because investors have held bitcoin for a very long time so traders and buyers hate bitcoin.

I think that it was "man made". I'd say that it has happened before too when - for certain events - peoples' expectations got fast too big.
This El Salvador story together with the great rise for the last 7-8 days have created a perfect storm we were too enthusiastic to see.

The result was:
* some actors dumping to move the price down
* possibly some actors cashing in their gains for the week to avoid risks
* many traders' stop orders kicking in and moving price even (much) lower

As you see, the bad actors have only started the avalanche, they didn't do all the job. Margin trading and stop orders not under continuous supervision have most probably doing the rest.


However, all this is only a theory. But it's not the first time I see this kind of development.

The next president is never going to come out with such a statement, not in the next century at least. The US dollar is the worlds reserve currency, meaning a lot of other countries trust it as a relatively stable asset in an increasingly turbulent world - they're happy to convert their own cash, at whatever the prevailing rate is at, into dollars and even have it slowly inflated away by "quantitative easing" (aka money printing). Having control of the reserve currency of the world is an unbelievable gift to America and gives them control over all sorts of financial levers that other countries will never have. No sane government official in the US would ever suggest such  thing, as best it might be begrudgingly allowed as an asset but even then - it simply does not have anywhere near the transaction power needed for everything taking place each day even in a small country.