The irony of this article being hidden by a paywall..
Unpaywalled link has been posted already
I don't understand why people post paywalled content on HN.
Because it's still a good article and can be unpaywalled. I believe we're supposed to link the original source and someone can just comment the sci-hub/archive.ph/whatever. Same reason you'd cite the original in a paper.
Usually someone will come along and post a link that gets around the paywall.
If there's a workaround, it's ok. Users usually post workarounds in the thread.