Perhaps, soon cryptocurrency will come to replace the dollar.
Nah, i don't think so. There's a lot that would have to change, fundamentally and logistically, for the USD to. E replaced. There is so much momentum required to make such an idea real that aomething very serious would have to happen to the US. I'm not talking about recession, but full government abnd economic collapse.
What Bitcoin is becoming is a safer and more profitable way to store wealth. The non delflationary value is the greates benefit Bitcoin has as a store of value, and it's a characteristic that fiat currencies can't compete with.
What's best for Bitcoin is for it to exist happily in parallel to Fiat currencies.