So, yeah, this isn’t actually a form of insurance.
Firstly, the additional federal dollars are paid for by the federal government, not the states. That is printed money.
Secondly, the federal government also paid large portions of unemployment in assistance to the states - something it also did in 2008.
First of all, do the payments alone support the program, or does it need cash infusions from taxes or money supply increases? How much would the premiums be if it was self-supporting?
Second, are those making higher premium payments (when you also account for the money infusions) at proportionally higher risk of payouts? What factors should be considered in the premium payment?
The capacity for a government to run essential services at a loss is a long standing component from even the US founding fathers. Hamilton wanted to adopt all debt from the colonies as a way to consolidate credit, unite the colonies financially, and put stock into the federal government with power to manage the nations debt vs individual states. Jefferson was against the policy but it (and other Hamilton drafted plans like a central bank) were approved through compromise.
Sure, it can run at a loss. Maybe that's a public service. But I asked some questions that merit an answer if you want to call it insurance rather than, say, social security or something.