Crypto market is very strange and not necessary correlated to traditional financial market, so if there will be a global crysis it's not certain that also crypto market will suffer because the biggest coins like BITCOIN and ETH could be a good alternative to $ or EUR.
I had the following thoughts: if the world starts an economic crisis, then people will invest their money in crypto currencies and the crypto market will grow. But these are just my thoughts.
You have you're own perception I think maybe some people divert their investment in cryptocurrency but still word crisis can also affect crypto world, not for long term cause cryptocurrency has its own market and investors. For us members in this community is to help even if in a little way to make crypto more sustainable and stay helpful for everyone who still believe in crypto.