SVB collapse has shown that the 250k limit is basically not relevant. Maybe if a big consumer bank like Chase failed then 250k would be the max paid out, but we haven't seen that.
And OP is referring to Synapse, where the FDIC could not help any of the americans who lost their savings because the underlying banks didn't fail. https://www.cnbc.com/2024/11/22/synapse-bankruptcy-thousands...
Only as long as you're too big to fail...