I don't mean "why would people use it", I can see benefits for sure, it's just so... contrived... that it really seems like a terrible implementation of whatever the government/companies actually meant to incentivize.
It's better than nothing at all, but it definitely seems worse than a lot of other ways this could have been implemented.
The alternative is probably just deducting medical costs, but that's worse: can't do it unless your costs are significant (there's a % of income required and it needs to get over the standard deduction too). But yeah. Pretty terrible.
Clearly, the financial companies behind this have an actuarial interest. And the employers have something to check off; not sure if they also get to save on some payroll tax on the elected amount?