Her "coming out" is not applicable to my life (and presumably not yours) as I'm a very casual social-media user (also, I guess, an old man at 42), so at some level I can see how it seems trivial. And the clickbaity, overly dramatic headline here (reused from teen vogue... which I'm not familiar with but I'll guess is not heralded as a literary journal of merit) doesn't help sell the story too much.
But I know enough young people to realize that the social media "like"-fueled bubble she was apparently living in is not unique to her and is surprisingly pervasive/scary among a lot of people her age (even those who aren't "internet famous"). Given that, I totally respect her realizing how superficial it can all be, realizing how misleadingly disconnected from real-life it can be and stepping back and telling her story of what seems like a real social media obsession so that others might step back as well and rethink how they deal with social media.
Nobel prize worthy? No. Of course not. But brave within the context of her life. So kudos, Essena O'Neill, Australian girl I've never heard of but who may have a useful message for others.