>Personalized ads are more effective than non-personalized ads, to try to argue that personalized ads are ineffective is incorrect

I basically agree with this. I think because people don't like personalized ads, there's a temptation to argue they don't work.

But I think it's motivated reasoning in this case. And I actually think the argument against them is stronger when you acknowledge that they are more effective. The privacy issue goes hand in hand with the effect that ads collectively have to socialize people into consumer behaviors.