It is not advertising per se. It's a warning in advance of a well known end of support.
I know a lot of people who have adopted the same attitude as David, ho-hum the end
of support of XP. They too, can't wait for April 9th to see how much malware has
invaded their machines. The ones I know are not that concerned. Exactly like David.
By the way, I doubt that every XP user is aware of the so called deadline.
Another thing how often and how long do you stare at the GUI?
I do what I need to do then either minimize or close the GUI.