My thoughts exactly. Between reddit and HN I see a Benford's Law post every month or so.

Although in this instance I agree, I think the bigger point is that you shouldn't call anything "arcane" on HN. Because it'll be well known to someone and that someone—who is probably someone who could contribute a lot to the HN discussion—will think poorly of you.

Benford's Law is pretty well-known in mathy circles.