FWIW, I think the colorful and abusive language in this instance did a good job conveying additional information about the poster's mindset, opinion, and how they relate to others.

Note that it doesn't reflect well on them. Part of their point is how they say it. To me, this says they're being reactionary and not mindful of others, which undermines their standing.

Bad language is a useful signal in communication. In this case, especially, it's a negative signal about the poster.