Or just doesn't care about the 0.0000001% of people who don't have javascript enabled.
And considering this site is "HACKER news", I'd wager that thought process is not at all rare or unexpected.
Additionally the content of this linked URL could easily and fully be conveyed in pure HTML with no need for JS.
It might be one of the things you personally care deeply about, but that doesn't mean any site owner needs to. At all.