Interesting, I know it's been discussed for a while. But, to me, I just see it as an answer in search of a question.
I'm pretty certain this is a very common opinion if you're in a country with pretty consistently working cellular data. On the other hand, this might be a total godsend for people in poorer countries/cities with bad reception.
I was thinking that if you are in a country with bad reception / poor internet you are probably more likely to be using cash rather then something that does require internet.
I could be overthinking it, but I don't see people who don't have good internet using something that by definition requires it to function.
Once again, I am not saying that this is a bad idea, just that there are other things that I feel are more important.
-Dave