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Blogs and tutorials that you write for other people are much more likely to be seen and recognized by everyone else who matters: fans, users, employers, and are way better for your career than forgotten github commits. So do it, but don't expect projects to like it BECAUSE:
The people who run projects and act like code is king then resent that someone who explains their project better gets more recognition in the general public. They'll constantly go "_I_ should be famous for my C code, not this dumb blogger (pout)." And ignore your work.
Finally, if you want to understand the psychology behind this read up on insecure narcissists, perfectionism, and people who were "gifted" as children. Usually they're the ones who act like this, and understanding them helps to navigate their behavior.
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