https://kofi.sexy/blog/elm-beam is the actual URL of course.
!!! I don’t know what happened, I’m quite sure I copied the whole URL when submitting the form; weird. I even remember the title being fetched as “elm-beam”, which I edited to match what I originally found on Reddit. Strange. Thanks, obviously, for posting the comment (I don’t seem to be able to edit the URL now).
The blog has a bad rel=canonical link that the title-grabbing code picked up.
Also related: https://github.com/wende/elchemy