They are of the point of view that since internet cannot replace the newspapers, the same is true with the banks. Being a crypto lover, i would love to see banks eliminated but does these big people with so much money will let that happen 
The fact is that bitcoin is not created to eliminate banks and fiat currency and it is a perception that many have over the years and if you are well aware of the dream you are holding and the implications you will understand. No one in the right sense will be willing to spend money with every transaction domestically but with international transaction bitcoin is a good alternative.We have seen these kind of threads for years and still many are not aware what they are talking about when they are waiting for the banking sector replaced by bitcoin
.