This is a little more complex with social media, where the goal is to drive engagement time as much as possible. Not really sure what would fix this, other than users manually setting up their own screen time limits. Legislation might be able to accomplish something, but that feels very heavy handed and would likely have poor execution considering how out of touch politicians are. Perhaps Apple could build in some OS features that would identify social media addiction and gently nudge users to take breaks.
The dumb phone idea is interesting and highlights how much of a current issue this is, but doesn't feel like a realistic solution for the broader public