And? Bitcoin is already consuming tons of energy while not being anywhere close to what our current system is doing

And not only in context of storing and sending money around.

There is still no fraud detection or account recovery or any other protection in place.

And all that while Bitcoin has not even a strategy on how you would be able to onboard everyone on the Blockchain fair and square. Everyone joining Bitcoin after someone else has less value.

No one will be dumb enough to start trading their fiat with crypto in the long run.

And clearly you don't know how banking works with your suspicion.