Banking the unbanked is not a feature of why bitcoin was created. It's to end central banking.
Discussion
it's circular. Central banking is evil because it precludes half of humanity - amongst other evil things of course.
In ending central banking we are permitting everyone to partake in systems of wealth transfer.
So it very much is about "banking everyone" - because exactly that is what Central banking is about - banking and fucking the wealthy people of this planet... It's all about control