So if you don’t allow your iPhone to connect to wi-fi, you’re cool, yes?
The bug is in Broadcom's routers. If you are using someone else's routers, you're cool. Yes. . . and for the most part, if you're using a secure router setup you're cool also. I generally will not use any WIFI in public. It may claim to be secure, but who knows who owns the service.
You an connect to wifi - just use caution on public/non-secure/non-password protected wifi. Even then - it isn’t as simple as these alarmists pieces make it sound.