Digital tickets are paid for with conventional money.
Cash is being replaced by credit and debit cards. Bills for these are paid with conventional money.
Sure, there are advantages to the technology itself. Its application in trade finance can create efficiencies in commodity trading although it hasn’t really taken off yet. That side of it was the part that drew my interest. The problem comes with unregulated secondary markets and the opaqueness...
Just because something is new that doesn’t automatically make it a good thing. I am an experienced investment professional and have not heard a coherent persuasive argument in favour. I have heard a lot of bullshit around the topic though. Beware of people telling you something is inevitable...