Submitted URL was
https://xunroll.com/thread/2053047748191232310. It's fine to post alt links to people can read the content, but please post the original source as the primary URL. This is in the site guidelines:
https://news.ycombinator.com/newsguidelines.html.
If you post the alt / archive link in the comments, we'll often move it to the toptext if we happen to see it, and if anyone wants to make sure we see it, they can always let us know at hn@ycombinator.com.