They could misuse their personal information.

They may struggle with real-life social interactions.   

They may engage in stalking and harassing others.

Using social media incorrectly can affect users' emotional well-being.

Using social media is beneficial for those who have problems interacting with others.

Spending more time on social media guarantees effective management of personal information.

He might become more cautious about the use of social media.    

He might think that the negative effects of social media are difficult to address.

He might believe the issues described are mainly relevant to people who use social media very frequently.