[hypeatei]

I don't find the broad stroke of "mental health" very useful in any discussions since it implies there is a baseline mentally healthy state. I think some people are able to handle social media and others aren't, and that's completely fine.

[II2II]

While I agree that mental health is an awfully broad stroke, I have seen few discussions that represent it as a baseline for a mentally healthy state. It is typically used when either self-harm or harm to others is involved.