The unrelated means the popup setting for auto update notifications will have no effect on what is displayed in the UI.

That would be displayed regardless of what would have been displayed in the auto update notifications even if that happened to be the correct auto update notification popup.

There are no settings for the UI, other than the avastUI > Settings > Appearance - Scroll down to the Community Features - Show avast! recommendation features & Show social networking features. I don’t believe either of those being unchecked would make any difference as I have had them unchecked for a very long time and I still get the various ads/offers in the UI.