It is an interesting insurance policy, although I'm curious how it'd work out in reality given many wealthy investors are who are propping up prices (and they rely heavily on existing financial system). Gold seems to be a logical place for many cryptocurrency holders who are coming from more political side, although I always provide some caution here as having at least some cash producing assets can make a light and day difference in your portfolio.
If I could predict how long it'd be to the upside, I'd be selling my knowledge for millions! In all seriousness, who knows - But I think the bubble will likely pop in next 2 years, which isn't exactly a great time horizon but these are predictably difficult to predict. We'll likely see more warning signs as we get closer, but it's tough to spot them when you are right over top of them.