I'm not. That phrase "Smart contracts allowing for autonomous organisations might well be the first time a species is organising itself without a central entity." is ridiculous.
Plenty of organisms organise between individuals without a centralised entity. Look at, for example, Stromatolites, which have been formed by self-organising bacterial colonies for around 3.5 billion years.
> There are plenty of legitimate reasons for wanting a decentralised alternative to banking.
There are a few, but those edge cases do not add up to it being "inevitable that everything in banking/finance will move to a decentralized model". And they don't outweigh the services and capabilities of the bank-mediated model for me, or I imagine many others.
When was the last time the bank froze your assets at the command of the government? I don't imagine it's even on the radar for most folks.