edit: To clarify, this is a light-hearted continuation about how essentially any claim about the stock market is enactable in some form. And so even the much of generally well-intentioned advise is in fact a claim that the person should be putting their money on, if they truly believe it. I think only claims like "Nobody knows what's going to happen, it's effectively gambling => stay out of the market" come close to being fully self-consistent, but e.g. advising to not buy because the price comes down, or to not short because of volatility both fail this. Markets are funny.
My only claim was that to profit from shorting it you need to not just be right that it is going to go down, but be able to tolerate the volatility in the interim.
That's a claim about the stock market, how do you enact it?
Note it is not a claim that volatility is definitely going to be high.