For me I will say NO.
Even this recent post on your profile is plagiarized I guess there are more on your past post before this, right?
You cannot eliminate that right away even though the possibilities of Crypto in economy is high. There are benefits of Crypto and the same with fiat. We can use both of them for our everyday life. We should look at the new era. Countries are ready to enter the cashless era using only mobile payments and cards, such as Sweden the United States and so on. For the mean time i think Cryptos and fiat will both coexist.
Of course it would still be necessary in the world. From the first place, for how many decades, we are using fiats for day to day transactions. You cannot eliminate that right away even though the possibilities of crypto in economy is high. There are benefits of crypto and the same with fiat. We can use both of them for our everyday life.
Why can't you make your own post, if you are not that good in English on verbal or written just admit it and be honest to yourself, local boards are there or there are many ways you can learn it.