Compared to fiat currency, Digital currencies are very powerful in-terms of control. You can control your own coin. There is no interference from the government, no one can rob it or counterfeit it. You can use it globally and expand your business internationally. I don't find anything more powerful than this! what is your thoughts on it !
When you said Digital currencies, It includes most currencies that can be accessible digitally, including fiat. Now most banks have their apps where you can manage your funds. Mobile banking system makes it digital. Moreover, Your word included other currencies like shitcoins and centralized currencies. You don't have all access to your fund unless you use a decentralized coin like Bitcoin. If you use coins like Luna, You never know when your coin value will be zeroed.
Most of the shitcoins are centralized, and the developers can increase the supply to infinite, and your coins will lose value in a few minutes. You may use better words like Decentralized currencies or Bitcoin. That will make your OP perfect. I hope you already got what are my thoughts on it.