Here's the thing, only the wealthiest of the wealthiest will be ready for a collapse as massive of magnitude and relevance such as those that would come with the US dollar collapsing. Why? cause your money won't mean shit when that happens, if it's fiat, you're even more fucked. But if it's crypto, sure, the illusion of a higher bag will definitely set in but remember, everything is even more expensive now, and 9 times out of 10 I would assume you'd end up cashing your shit out and actually spending the money you tried so hard to save in crypto, to support your needs.
Nobody's going to be ready for this even if you brace yourself. So why not wish for it to not happen instead? At the end of the day, it's not like the US is doing nothing to circumvent the situation anyway, they know what will happen and just how massive it's gonna cost them.