The point isn't to not depend on anyone else for anything, instead it's to unwind some of the dependency assumptions we've built up over time.

Many in the world don't have access to a financial system. If they have internet, now they do (assuming they can find some way to onboard). Beyond that, plenty of financial tools only were accessible to the ultra-rich/institutions. Many of those are now accessible to everyone.

May be worth taking a step back to see why brilliant minds are intrigued.