I don't think Crypto currency will be affected by the economic crash. If there is an effect, that would be that people will pull out their investments on the stock market and place them on Crypto currency. But I don't think crypto currency will come out unscathed if ever the economy crashes. I don't know how but it will.
Seems to me that you have not been looking through price charts or market movements at all during the last 2 months and this month. There has been a drop in the stock markets of all countries and the cryptocurrency market at the same time. This may be just speculation but its being called an economic recession for now on. It might bounce back sooner or later.
Now the thing to note is that crypto is not immune to market movements of other sectors. It does get influence and moves in the same direction. But more comparison is useless unless we get further information as to why the drop.