[greenyoda]

If preferring to learn a subject from someone who knows it well (and has spent days or weeks rather than minutes editing their prose) makes me an elitist, then fine, I'm an elitist.

Your hypothetical article about Go and coroutines could be very useful, provided that the author has had some significant experience with both Go and PHP (e.g, they've written and maintained non-trivial programs in both languages). Otherwise, it's likely to be full of misconceptions and even errors.