The language bit is dual purpose. For one it's clearly tongue in cheek. Furthermore, it's a way to scare off people who would get set off from a little bit of language play. It's a way to make an online space free of people they don't want without actually putting up hard borders or moving it to a less public space. (Personally I think it's a wonderful strategy)
All the commenters here that are too set off to engage with the article are exactly what they were hoping for
All the commenters here that are too set off to engage with the article are exactly what they were hoping for