I guess this might wrap it up for people who are on the fence about quitting or not, and don't want to get even more spyware on their machines.
And yes, they could update each and every single addon manually, but they won't.
In the end there doesn't seem to be much Blizzard can do about this other than making the game fully playable without addons, something that it's not. Although it doesn't need as many as people may think they need or use.