I noticed it too. Was a few clicks away from reporting it.
Not sure if I saved screenshot but as soon as I got suspicious, I went to chceck on /pol/ I saw post which looked exactly the same on /pol/. It had approx. 300 replies.
It started exactly like the post you linked but its wording further down was different.
I believe the post also got red text soon after it was posted. Admin probably noticed too.
Anyways, we dont want to go too paranoid on each other, right?