a) blockchain has no technological merit (given that permissioned systems already allowed for robust distributed consensus even in the presence of byzantine nodes back in the late 1990's).
b) the one innovation it brings (permissionlessness) is overwhelmingly negative (who really needs the "no gatekeeper" property?).
c) blockchain is good for nothing except crypto and crypto kittens (due to the oracle problem).
d) crypto is good for nothing except speculation and the circumvention of rules and regulations (which, like it or not, are mostly sensible).
Concretely for example on your point (it "let's some people keep their savings safe from dictatorial countries") - this would be trivial to offer for any bank using 1980's technology (offer an USD account just with username or password, no KYC), but it would also obviously be illegal and be shut down.
Making it harder to shut down - that's the one innovation crypto brings. But shutting it down is what we should be working towards.