This article by Cal Newport perfectly illustrates why we should spend less time on social media and more time doing meaningful work (emphasis mine).
Professional success is hard, but it’s not complicated. The foundation to achievement and fulfillment, almost without exception, requires that you hone a useful craft and then apply it to things that people care about. This is a philosophy perhaps best summarized by the advice Steve Martin used to give aspiring entertainers: “Be so good they can’t ignore you.” If you do that, the rest will work itself out, regardless of the size of your Instagram following.
…interesting opportunities and useful connections are not as scarce as social media proponents claim. In my own professional life, for example, as I improved my standing as an academic and a writer, I began receiving more interesting opportunities than I could handle. I currently have filters on my website aimed at reducing, not increasing, the number of offers and introductions I receive.
My research on successful professionals underscores that this experience is common: As you become more valuable to the marketplace, good things will find you. To be clear, I’m not arguing that new opportunities and connections are unimportant. I’m instead arguing that you don’t need social media’s help to attract them.