Meanwhile ...
my Mint 18.3 system chugs along, not having needed any zero-day patches since ... well since never ?
Not saying Linux is perfect, or FOSS is better than proprietary ... and at least all these MS bugs keep someone in a job. But you have to wonder.
I think the worst bug Linux has faced, that affected me has been the SSH flaws. And they were patched pretty quickly, and didn't trash my system.