IIRC this gap exists in states (guess which!) that opted out of Medicaid expansion. So a solution is available if states take it.
Good but worthless advice to the majority living without any savings: don't get sick and don't get injured. Can anyone blame them if they avoid expensive testing? Medicaid is a great bandage, but the US needs a better system.
I believe the biggest problem is the coverage gap I mentioned, where 10 states for political reasons have not opted into the higher Medicaid maximums which creates a gap between Medicaid and ACA. This is dumb as hell.
I am having trouble figuring out where exactly the other coverage gaps are or how big they are. I'm sure there are some.
I would definitely support a switch to single payer to smooth out this mess.