You know, one day before you made your account, a three years' user of Hexbear made a post sincerely equating indigenous rights movements to anarcho-primitivism. So, clearly one cannot rely on people on a website with open registrations being fully aware of and well-read on racial issues, not even long-term users who up to that point had seemed to have consistently good and informed views.

But even putting that aside, it's never a good idea to assume that sarcasm written in the same way as sincerity is obvious. Never ever ever. Sarcasm should always be distinguished in some way, through tone indicators or upside down smileys or trademark symbols or parentheses or nonstandard capitalization or even just recognizable phrases.