That’s not how any of the COVID vaccines were reported to work. No such thing as total immunity.
The virus is deadly depending on what conditions are met (underlying risk factors, etc.). Not all of those conditions are obvious or well-studied, so it always seemed to me like a lottery who gets killed by the virus.
Furthermore, I don’t believe the article is fearmongering. As I said in a separate comment, it’s more like “hey, there might be a bit of an outbreak in some places this flu season, so keep some N95s on hand just in case numbers go up.” I HIGHLY doubt we would see another shutdown.