Probably half the jobs in the US don’t pay enough for the employee regularly see a doctor. It might protect them for the $500k emergency heart bypass, but they are not going to be able to afford the $10k out of pocket costs or the ongoing healthcare expenses after they lose their job.
Wouldn't you like to STOP the insanity of "picking" a plan every year (or more) and also end the billing nightmare by just making it all single payer (the government of the people, for the people)?
It matters for early retirees (or these days, people forced out of job some years before they wanted to officially retire). Without self-employment income they can't deduct it, and often for similar reasons they can't itemize. They still get the standard deduction of course, but an person on an employer plan gets that + their cost of premiums, automatically.