This bit right here is troubling...
"If it turns out that a lot of users want to be sure that they never see ANY message from us, even when that message is related to a feature that they already have, then we will have to add a new setting or modify the meaning of the existing setting"
I don't want to see any ads whatsoever as they drastically disrupt what applications I use on some of the machines that utilize Nortons. If the Notifications are turned off and I still get them then it's not working as intended in my eyes. I can understand the challenges involved with keeping customers informed but I can see no reason whatsoever for a setting that's supposed to turn off ads not working.
That bit is a deal breaker for me and when my subscription ends so will my usage of Norton's unless I can actually turn ALL these notifications off.
[edit: Clarified subject.]