What exactly are you expecting switching cryptocurrencies will solve a economic crisis? From what I know a economic crisis or a global recession happens naturally and is like a reset for the market, nothing can solve it but it will fix on its own. We may see that several marjets are down due to people loquidating their assets in the need for money but the truth is switching ti cryptocurrencies now won't really change or do a positive thing for what is happening right now.
We know that economic crises happens from time to time but what people are predicting is that we are going to see a crisis that is going to be unlike any other, it is going to be a crisis that threatens all the system and if that indeed becomes true, then the next crisis is going to be big enough to threaten and even destroy the current economic system and if you think that is impossible the last time this happened was in the seventies so it was not that long ago.