"[Online social networks] reduce our curiosity by showing us exactly what we already want and think, based on our profiles and preferences." I hate to defend t

"[Online social networks] reduce our curiosity by showing us exactly what we already want and think, based on our profiles and preferences." I hate to defend the world's largest algorithmically-enforced echo chamber, but is this a really strong claim - is this seriously true? Like, a measurable reduction in curiosity across the board for Facebook users? What about if your friends are thoughtful and use Facebook primarily as a means of textual interchange? And if the inverse is true - that being shown what we do not want and do not think makes us more curious - how does the author explain polarization? And are those irrelevant Youtube ads supposed to make me more curious about the world?