I think what we need to acknowledge is that there will come a point when there is almost no supply for sale, versus insatiable demand. If the ETFs sell shares today on the expectation that they can shore up their BTC reserves tomorrow, they will find the price has completely run away. In 24 hours.
It will be not unlike GME. And the solution to that “problem” was simply disabling the “buy” button.
I suspect the same will happen here. ETFs will disable cash creates until markets “stabilize” while selling will remain available.
We’ve seen this movie before.