I’m all ears on an explanation of how your first point works, because so far no one else that has made that claim can support it with any sort of explanation. The FDIC limit provides confidence to retail customers which in turn curbs bank runs on bad information. Bank runs are probably one of the lowest volume reasons that banks fail. I can name 4 bank clients that have failed in the last 5 years, runs on deposits weren’t the issues with any of them. I can’t come up with anything a bank does at a higher risk level with depositors balances covered because they still put the bank at risk in any scenario you throw out. What it does is artificially deflate interest rates on bank accounts and probably artificially prop up the sheer number of chartered banks there are. Those both may be positives in reality. I’m also not arguing to perpetually cover deposits, but again in almost every scenario depositors end up whole. The timing is the anomaly here, not the fact depositors get their money back.
On your second point, item number one on their list then should be caps of no more than FDIC covered deposits. How many bankers do you know that operate that way? Also, where do you live that bankers require licensing? If they aren’t selling investment products or in mortgage lending, I don’t know of any licensing needed.