> First of all, the article stated that people using social media moderately (half an hour to one and a half hours a day) had little to no decline in their mental health, compared to a large mental health decline in those using it a lot (3-5+ hours a day)
This is an excellent, solid point.
> Another thing that the article mentioned is that people these days who do not have social media may feel excluded or left out, and may even miss things because they don’t have social media, which can lead to a decline in their mental health as well.
Not convincing unless it can be demonstrated that the expected harm from being isolated from social media is greater than the expected harm caused by being exposed to social media.
> Yet another point was that people will compare themselves to other people on there [...] I don’t usually compare myself to them
This is not well reasoned in my opinion: this is described as a consequence of social media usage. It hasn't been shown to be a preexisting personality trait that, combined with social media usage, causes the mental health issues. That is, you may not compare yourself to others precisely because you do not use social media regularly.
All that said, however, the first point (moderate usage) combined with the last point (excessive usage later in life) is fairly persuasive for a strategy of allowing small doses of social media.