I thought so too but dang's post history shows knowledge of type. Maybe dang is saying that calling this a grotesque font is name calling and poster should post more on why it is one.
He specifically says "what is bad" -- he simply didn't get the joke. No need to prance to defense of the mods when they miss something.
Ok what do I need to know to get this joke?
Grotesque in the context of typography is a category of sans serif typefaces, specifically the one from which typefaces like Helvetica descend (they are usually called neo-grotesque). So the GP joke is based on a double meaning: on a first read it may seem an insult, but typographically he is just stating a quite obvious thing: that Helvetica Now is a grotesque typeface.
The alternate name for Helvetica is "Neue Haas Grotesk".