My impression (which might be unfair since I haven't used the Taler system) is that this looks like a technically better but practically worse version of payment systems which already exist in parts of Europe like the Polish Blik, Swedish Swish, Norwegian Vipps and the one they have in the Netherlands (I forgot the name of that one).

In "the real world" I really don't want to be dealing with a wallet of electronic cash stored on my computer. What I want to be able to do is relatively seamlessly pay for a curry or send my friend some money I owe them or something.