I think this could be changed but for now it is very difficult to achieve it, if crypto replaces fiat, of course there will be many negative and positive impacts, such as payment transactions will be fast, and the shortcomings as well as when the transaction is disrupted will disrupt the process
if fluctuations don't end with stability that has good fundamental character, this will end with a weakened economy and many impulsive problems that cannot be resolved quickly.
I guess that a few people use crypto instead of fiat even now. Nevertheless, if we speak about the whole society, it is not possible that virtual money could ever replace traditional currencies. People need fiat more.
In relation to virtual currencies (fiat), this has begun to become familiar and has even begun to be structured from the banking channel and third-party application developers. Crypto will be popular afterwards because it is connected with people who are familiar with online transactions who are finally interested in trying it out.