I'm sorry, I come from an English speaking part of the world that uses swear words quite differently. (As is very common in pidgin English variants.)

The parents post was objectively sexist, and objectively highly sexist. Calling that out must be ok, apologies I dropped expletives, it's a cultural difference.

That said, it's very telling that the post says using expletives to call out sexism is bad, but there's not a similar chastisement of the sexism itself. (Which garnered no comment.) Is decorum more important than cleaning out obvious and odious sexism from HN?