Child filters isn't nearly enough. It's the addictive nature of the apps, created by algorithms that are cooked up by psychiatrists, behavioral scientists, and experimentally and iteratively "improved" by AI - algorithms that could potentially be used for other things than just making an app "sticky"
You're right about the privacy concerns, but the conclusion should be to have rules so strict that it is practically banning X, Meta, TikTok, et.c.
That's exactly the idea. The process of rational discussion and consideration is supposed to take care of the quality.
Obviously this was before the birth of the internet, and also before the birth of the think tank :l