Only the extremists believe that crypto will take over all financial transactions ever. Instead, most reasonable crypto supporters believe that crypto will be

Only the extremists believe that crypto will take over all financial transactions ever. Instead, most reasonable crypto supporters believe that crypto will be helpful for certain usecases, while the existing financial system will be useful for different usecases, and they will both survive together. These extremist arguments would be like if people were to argue, back in the day, that PayPal was going to get rid of all banks. That obviously didn't happen, but few people would say that PayPal has "failed". It is definitely still useful for many things.