To counter my argument that cryptocurrecies hasn't managed to do anything better in online payments and has been outgrown...you provide a list of things that are being done without crypto. I would love to see someone make a killer app for cryptocurrencies that isn't just breaking laws almost as much as I would love to see the credit card cartel get properly distrupted, but at this point cryptocurrency has had it's had it's chance and has almost exclusively caused damage rather than create value.
If you think you see a way to change that go do it rather than posturing to me on the internet about a failed technology.
USD has a much better ratio of legal to illegal transactions. If cryptocurrency had anywhere close to that ratio it would be a lot easier to support.
However, in general, I am not a big fan of banning things. I hope that the damage that cryptocurrency is causing can be reigned in without banning it, though I suspect that cross-border jurisdictional issues will make that hard. Ideally, the cryptocurrency community could come up with internal solutions to limit abuse, but that seems unlikely given current trends in that space.
If you think you see a way to change that go do it rather than posturing to me on the internet about a failed technology.