Not really. At a traditional bank I have to trust n people with varying degrees of access. Et ceteris paribus, any reduction in n is an improvement, even if n is not zero.
Of course n can be smaller and the specific people less trustworthy, but that's quite a different thing.
That access is to provide account support, no? Reverse fraudulent transactions and the like. A "bank" could just not do that save for if you're a large enough client to merit attention but why would I want to bank there if I'm not a large enough client?
Ok so we are expected to trust; the creator/s, some random hacker, whoever else has the key? So the value here is between 2 and 'many'.
At a traditional bank you have your national deposit insurance scheme; you get that in return for converting your "assets" to the said nations issued currency but accept the authorities control of the money supply and your funds.
With decentralised money, you get the safety of a globally distributed attestation backed by cryptography without a single authority controlling the supply of money or your funds.
There is no halfway option. You either have a single authority that can exercise control or you do not; number of delegates for exercise of control is almost irrelevant since you can change banks.