Did they need to? It's not clear anyone would have lost anything at all because depositors are senior to equity and bond holders. All the bank's equity would have been wiped out sure (and it was anyways) but losses to depositors would likely be slim to none. If folks lost anything it would worst case have been like a 5-10% haircut, not 100% of un-insured deposits.
The FDIC was using this as an opportunity to say "we've got your back no matter what" to reassure the public.
It's extremely unlikely anyone, anywhere, would be at risk of losing any deposits - insured or uninsured - in this day and age in the US regardless of the FDIC's 'new' position.
> The first republic rescue saw three of the largest US banks depositing 30 billion dollars to prop it up.
The only real issue at banks right now is that they're in long-term government debt which has significant mark to market losses - which are an issue if folks are trying to withdraw since they can't be liquidated for face value. However if they're held to maturity there's no loss. So the Fed provided a facility where banks can borrow against the maturity value of long-term debt instead of market value.
That makes the problem basically solved.