I'd like to hear more about your view, but I don't quite see how what you said applies. My point is that, _if_ you considered cryptocurrencies to be nothing other than a scam, it makes sense to ban them on account of the harm they cause to others. Your examples of Signal and Telegram are not the same thing at all, as they are general communication platforms also used for many things other than terrorism. If there was such a chat app specifically made for and exclusively used for terrorism, then yes, I think banning it is the way to go on the grounds I mentioned above. Can you elaborate more on the details you think we disagree on?