Re the other comments in this thread: no moderators did anything—we didn't even see this post until someone just pointed it out. The question about /ask is in the FAQ: https://news.ycombinator.com/newsfaq.html (see "Why hasn't my submission appeared on Ask HN or Show HN?")
Update: Up again in "new", still missing from "ask". Thanks mod-in-the-sky.
Update 2: Now showing up in "ask" too.
It's not the substack.com domain I assume—isn't Substack part of Y Combinator? I use their "share" button to share articles directly on HN…
Does HN shadow-ban any other writers on Substack? Or is it just Yarvin…
Is there a place I can go to find domains and people banned on HN?