It's just substitution macros for the C++ preprocessor that was probably churned out in no more than 20 minutes (by members of /g/).

The README was collaboratively written by /pol/ viewers.

Actually funny? I thought this was hilarious. Perhaps not if you're unfamiliar with extreme SJW rhetoric, or if you sympathize with it. Either way, it did cause a stir all over the web (especially Reddit), but not here.