It's unfortunate that HN is more willing to downvote dissenting ideas like this than discuss them.
Yes, the loss of privacy the internet has brought has been immense. However, the complete overhaul of social structures, the influence of large platforms on them (such as by optimizing for clicks/adverts), and the social pressures and influences that come with these by default is something that directly impacts most people for literal hours a day, and has run-on externalities that will affect the whole of society for the rest of our lives. Most people are only tangentially and occasionally affected by their numerous privacy losses.
Sure, I'm not certain in the studies showing that Facebook is negatively associated with wellbeing. I'm not certain that the degradation in conversation quality due to platforms optimizing for controversy is a real effect. I'm not certain that echo chambers preventing people from hearing moderate opinions of opposing sides is going to permanently damage public discourse. But these are not small risks, they are almost everything when it comes to humanity's ability to steer its future, and the potential impact on people's lives should not be so easily dismissed.