The only “moral hazard” being created here is encouraging people to deposit money in smaller banks.
If the govt hadn’t created the “moral hazard” then people and businesses would simply have chosen to do all their banking with the much safer big banks like Chase and Citibank.
The reality is that Americans don’t want all banking to be concentrated in the hands, but smaller banks are significantly more risky and inefficient. Depositing money in the smaller banks and not just the top handful is the “moral hazard” that has been created by government intervention.