Ironically your response is the tone-deaf and stupid one here.
The person you're replying to isn't arguing for people to be using "Jim's shady internet bank" or a random buddys bank, they are discussing the ability of current trusted actors to act as custodians and insurers for cryptocurrency-wallets, hiding the scary and difficult aspects of cryptocurrency, while operating on top of an open-source, trust-less, publicly auditable, open base-layer like a blockchain.
They are saying it's possible to regard cryptocurrency as a base-layer for economic transactions, and that without it it's basically not possible today to leave the traditional banking world behind if one wants to maintain a digital presence. Don't you think it should be? Why should an individual be forced to have someone else be custodian for their wealth?
Cryptocurrencies also aren't really finished yet, there are a lot of improvements to be made before it is possible to replace the existing financial infrastructure and maintain its scale.