Health insurance may not be so bad for a $300K+ SV software engineer, but it's terrible for just about everyone else. My wife's a teacher and for a while we had to use her health insurance, which meant getting the "family plan" option through her school district.
The cost of that? Half her take-home pay. And it's not even a very good plan (i.e. we were still exposed to a lot of risk, we had a couple medical things come up in the same span of time and were out several thousand more dollars for those).
Now, sure, I make way more money than her so we were fine, but her single-parenting colleagues? The couples in which both are teachers? They're not so lucky. And more jobs pay way closer to a teacher's salary, and may have even worse health benefits, than pay anything like SV software developer money.
Half may be an exaggeration, but for normal people losing 15-30% of their post-tax income to healthcare is probably about right. And of course we're already paying Medicare & Medicaid taxes on top of that.