You haven't lunk to the blog post, you've lunk to the blog front page. I suspect this was a mistake, and you intended this link:

https://karim.cloud/blog/posts/GroupDecisions

EDIT: This may be an instance of auto-munging by the HN submission system

From the source of the article:

<link rel="canonical" href="/blog">

That usualy confuses the HN magic.

Indeed ... I've been in contact with the mods and got this sorted. Sort of.

Thanks for the heads up.