Norton is and has been crap for years, it burrows so deep into your system that removing it often leaves traces of it behind and until you fully wipe a drive, you'll find bits of it hanging around in various folders.
A point to note though, is why so many people have everything set up for autoupdate, autorenewal, autocontrolyourpc! Often in a menu or behind a service, is the option to do it manually, but people don't bother, "it takes too long"
If you know why half the updates are added, you wouldn't add them.
Would you put it beyond a software/hardware/operating system/browser/engine to want to
know what you look at, use your pc for etc?
They can then "target" they're ads, etc, at you, autocharge you for renewals you didn't know
you'd signed up for etc and generally clog up your system.
When you see "automatically do this for you" in an options menu, ask yourself why?
Its like reading the small print in a contract.