This has been debated to death for centuries already: of course it's a clear net positive, in the same sense that prohibiting alcohol, cannabis, regulating video games, legislating sex, putting ankle monitors on fat people to monitor their activity levels—all these things are "obvious" social improvements: in practice, not at all. These isn't a novel debate. It's a revisited, misguided paternalism to imagine you can fix people's (admittedly defective!) lives, make them healthier and better people, through coercive political agencies supervising and guiding them. (A less charitable comment would substitute "authoritarian" for "paternalistic").
There's two experiments running in parallel right now. If you want to live a free human in a free society, live in the West; if you want to try the alternative of a benevolent father-government, go to the Middle Kingdom—go somewhere where you can assume that lifestyle, where government shuts off your addictive video games, puts social credit scores on your alcohol purchases, sends social police to re-harmonize your life when it's un-harmonized. Where (of course) TikTok has been banned for a long time already, and all dis-harmonious, time-wasting social media is already helpfully filtered out of your life by a nationwide internet filter.
Please don't turn the West into the East: speaking for myself, I would like the option of living in a free society, somewhere. Unfiltered internet access is a core part of that.