Will the concept of money as a currency really get replaced in the future?

Came across this article stating Elon Musk predicts the death of money and that energy will eventually become the 'real currency', using Bitcoin as an example . Just one of his mad genuis rants, or is there some truth to it.. Sometimes I can't tell if we are moving forward or backwards in this society - we once traded goods through bartering, but eventually created a universal medium of exchange - currency. If we are goanna absolve this, are we are actually moving forward..or slipping backwards 🧐