Presumably if you do not have social media, you will be weeded out of the banking system like the terrorist you are?
It's already very difficult to avail banking if you don't carry a smartphone. I have a very inactive social media and I am working towards reducing my dependence on smartphones, at this point my most viable option is to move to another country that hasn't "modernised" their banking infra.
I think it depends. I never use my smartphone for banking purposes and it doesn't make anything difficult for me at all. But I'm in the US and I know there are other nations where this isn't at all true.