RE: Banks will be replaced by exchanges in the coming years

"Imagine a situation where someone in Singapore is purchasing groceries and they pay with their crypto wallet in the store."

This was happening since 2010. Bitcoin adoption was on the rise until 2015 when it was captured (by the banks).
Now, all that remains is the suppression of communities working in this approach from news and from the conscience of those supposed to be crypto enthusiasts. For some people, it takes a few months, and for others several years to realize who is working towards the adoption of censorship-resistant peer-to-peer electronic cash.