The Swiss offices have much lower tax rates than their bay area counterparts, a tax rate which includes health insurance (correct me if its a separate tax)
At 200k+ pay from FAANG swiss income taxes are not that low. In Zurich they roughly are comparable to US federal taxes, like what you'd pay in Seattle with just a few niceties like no capital gains tax. It gets a little cheaper in Zug and Schwyz but not much.
Health care is absolutely not free, in fact it's probably second most expensive country in the world for healthcare after the US. A doctor visit is going to cost you 100-200 franks at least. Insurance system works much better than in the US, but prices are (almost) as crazy.
Health isn't a tax as such, but an insurance service that everyone is obliged to buy from one of several providers. Importantly, it doesn't depend on your income, rather your age and health stuff like whether you smoke.
