Have you read any thread in this forum where the majority of members said that banks are not important? Banks have some major roles to play in the economy. And I am not sure I have seen any post where it was recommended that banks should be closed.

It is evident that saving money in banks is not profitable. Even interest from fixed deposits is not commensurate with the inflation rate. It is advisable to keep Bitcoin since it could be a viable hedge against inflation.

It is also good to state that nobody is forcing you to use or own Bitcoin. It's just an alternative to fiat and you can decide to avoid it.