Really funny to see stuff like this on hackers news.
Liberals arts majors appropriate mathematical language in an attempt to appropriate mathematics' reputation. Why is racism "prejudice + power" in this philosophy rather than "prejudice AND power"? It's because liberal art majors know that the lay public is more likely to believe mathematical conclusions than e.g. psychology or sociology or critical race theory conclusions. So they wrap their race theory arguments in mathematical language in order to trade on mathematics' sterling reputation for rigour and correctness.
It's always funny to see things like this on hacker news because well... There are a lot of mathematicians here. We know what "plus" actually means, and well, there's no sense in which "plus" fits.