Change in behavior can only follow from change in incentives. Parents must be held legally liable if they allow their children access to social media. That means jail time for negligence.
The power imbalance between individual parents and big tech is immense.
How can we be mad at random parents for not defeating the most powerful and rich people in history?
The government has just decided to fall back on "think of the children" as a way to implement more surveillance and control.
Incentives incite action. No action. No incentive.
Incentives play a role, you don't want to encourage wrong behaviors certainly, but they're just one factor in determining what people do or don't do. At best, they nudge. Those nudges aren't likely to overcome stronger forces, or even several weaker ones.
Someone may have a desire or intention to lose weight. But unless they lose the weight they lack incentive.
It's simple: incentives incite action. Don't make it more complicated to win an argument.