Later, in the "by the way" section after the article. After an article that in no way suggests it's talking about printed and shared code exclusively. After paragraphs such as this

> Bottom line: this isn’t a matter of taste. In programming code, every character in the file has a special semantic role to play. Therefore, any kind of “prettifying” that makes one character look like another—including ligatures—leads to a swamp of despair. If you don’t believe me, try it for 10 or 15 years.

The submission reads very much like an attack on any use of ligatures in code. The comment in the end reads, to me, more like a resignation of responsibility over his claims.