To play devil's advocate: this author is known for often having a combative style. There's usually lots of good substance alongside that style, but the tone is what it is, and you could argue that it's needlessly incendiary. (Though in their defense, the post yesterday was self-described at the very top as "a proper rant")

HN is a powder keg of emotions about programming languages, and fasterthanlime's posts tend to be... shall we say, "sparky"