Crypto is a great thing, and it will be adopted as time goes by. But people have been predicting the collapse of the dollar for at least 35 years. I remember the same thing in the 80s when everyone went nuts for silver.
Bitcoin is forever because it cannot be defaced like paper money.
Yes the American dollar is NOT collapsing. There are good reasons to be involved with crypto, but a hedge against Armageddon is not one of them.