It sounds like you would be happier to see the next sentence get into greater detail about how targets ads impact privacy today. But the article does in fact do

It sounds like you would be happier to see the next sentence get into greater detail about how targets ads impact privacy today. But the article does in fact do so (look at the paragraph that starts "This model has some major drawbacks..."), and the next paragraph you refer to ("Most products are a much better fit...") builds to that point by explaining why targeted ads exist at all.