Brilliant write up.
However, as the author suggests, finding a “unique purpose” is ambiguous. Have you seen how the journal articles are written, for example? Many “ideas” repeated over and over again they only contribute to an information overload that we could be happy without.
With the barrier to entry to launching a blog or publish an article these days being so low, there is candidly a lot of crap out there. Before jotting down an idea, I ask myself, “Does this exist on the internet today?” and if not, “Should it?”. If I can answer those questions with confidence, I’ll consider pursuing the piece. For the same reason that I will never drop ship plastic goods that no one needs, I will never publish an article that I don’t truly believe can benefit others.