[estearum]

I think the mechanic they're trying to speak to is that due to insurance being tied to employer, no insurance plan (besides Medicare/Medicaid) is truly motivated to ensure good health outcomes beyond a ~4 year horizon. You'll switch jobs and get a different plan.

[Ichthypresbyter]

FEHB plans would also have this incentive. I think at least historically Federal employees didn't switch employers as much (though job-hopping between agencies happens), but more importantly if you retire from the Federal government you keep your health insurance.