If the wolrd's economy and banking systems were on the verge of collapse, how would the change to crypto go down?

First off I want to make it clear that I'm not interested in debates whether it is going happen or not because it would just take away attention from valuable information that someone is going to comment. Hypothetically speaking,

what would happen if all paper currencies would beasically worth nothing because of inflation? How would the transfer to crypto take place?

I have heard some interesting people say that if we knew who was really behind bitcoin, we would sell and run as fast as we could. I am not saying I believe it. But we all heard theories about the richest 1% or 0.1% who basically control the world. What if the founder of bitcoin was/is someone bad, who's influential enough to arrange this? This would benefit him/her/them, right?

I am not saying I believe in this and PLEASE don't debate whether it's true or not because there's obviously no proof so let's say this is all a hypothesis.

Would decentralized currencies skyrocket? Would different CBDC's get introduced in every country? Or maybe nations would agree on one currency ran by banks together somehow?

I don't have too much knowledge about crypto. And I know I can't tell you what type of comment to make. But please just once could you only comment if you have relatable insights? Thank you to everyone in advance.