Replace TikTok with cigarettes, and it'll hopefully make sense to you. There was a time when people had no idea that smoking was bad for you, which is where we are now with these apps.

And since they're addictive, kids will find a way to get them even if their parents don't allow it. That's why it's most effective to require ID when you're buying cigarettes than it is to shame people for not being perfectly vigilant parents.

BTW, I'm not saying age verification is the solution here. IMO, we should instead ban addictive social media completely. Eg, target specific design patterns/features, require companies to disclose how their algorithms work to regulators, etc.