That's just some virtue signalling for his republican backers. Family and community values, we could leave our doors unlocked, country life, tech evil blablah
And no, I don't want him forcing conservative values on everyone but shutting down social media or even the internet as he seems to propose.
I do agree that social media has net negatives for society but forbidding is not the solution because it has positives too. Regulating the tech companies is. Forbidding engagement-driving algorithms will go a long way (especially since negative emotions are the most powerful drivers of engagement)