Wouldn't the correct solution be to empower those parents with subsidies or free child care? If you have to work 3 jobs, parent or not, there is something wrong with how we've structured our society. Banning social media in your example seems like a bandaid put on a person with external and internal bleeding. You'll stop some of the bleeding but the person will still suffer and die.
Yeah, there is almost always better solutions to all problems than the one society goes to, but history has taught us that that a lot of times if we wait for the "better solution" we end up years and even decades without either solution.