They SHOULD take it seriously. To say that social media fame is not valid is simply naive.
I’ve seen several of my own friends who have benefited greatly from it, be it for their careers or personal lives. But bear in mind that the fame they have now is simply an *excess* from their social media presence. It was purely accidental.. at least in the beginning.
Are there people out there who set out on social media with a craving to be famous? Yes. Do I think it’s kind of sad? Yes. But to each their own, eh. But fame is fame, however you look at it.