I am not sure I know exactly what you mean by Crypto banking but some of the points are:

With BTC:
- there is no authority to blacklist you
- they do not get to tell you "Sir our daily limit is 2000, we are very happy that you keep your 2 mil with us". In the next 3 years you'll get it all
- they do not get to tell you whom you can transact with
- they do not get to lock your funds on software glitch
- they do not get to limit you access when the next wave of government inflation hits your lifesavings and you are watching your purchasing power melt like an ice cream in Harare

And most importantly: - they can not force you to transact, save and live on money the powers to be get to counterfeit on a whim