You seem to believe employees wouldn't be able to opt out of their own employer-based insurance. Why is that?
> Private insurance that duplicates benefits offered under New York Health could not be offered to New York residents.
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My interpretation of that is that private insurance (which includes employer-based insurance) would be banned.
I'm struggling to understand what is not covered beyond that.
I looked at it last year in terms of whether I'd need to pay for COBRA to cover the tax penalty and... nope. You can retroactively opt into COBRA for 90 days after the fact (iirc, check this yourself before using), so you can job hop and then if you happen to smash every bone in your body during that one week then just sign up for retroactive coverage.