USD is already a mostly electronic currency. I’ve done some reading, and I have yet to come across a compelling advantage for cryptocurrency cum currency for the purposes of legitimate transactions.
It’s mostly useful for people whose social networks aren’t fully enfranchised in the U.S. financial system. For people within that system your analysis is correct.
Interesting. Can you expand on what you mean by "people whose social networks aren't full enfranchised in the U.S. financial system?" The phrase has me thinking of this: https://en.wikipedia.org/wiki/M-Pesa