If you are seriously asking, the answer is that these are dog whistles for white nationalistic and homophobic groups respectively.
Furthermore, the concept of "the white race" is unscientific, and was created to group together a majority against minorities. Italians, Jews, even the Irish were consider "non-white", while the Spanish conquistadors began calling themselves blanco in order to state their superiority over the aztecs.
Respectfully, and I am not an academic, but from my perspective, it appears that it took 7 researchers to interview 22 people on /r/programming, and then write 12 pages about it with the conclusion that if you want to write software, /r/programming has some good news, and that people that use reddit are comfortable in upvoting and downvoting posts?
And you have 49 citations - is this some sort of comedy journal like the onion that I am missing, or did these people just need to do this for homework? And you are sharing this at a programming conference? yikes.
Furthermore, the concept of "the white race" is unscientific, and was created to group together a majority against minorities. Italians, Jews, even the Irish were consider "non-white", while the Spanish conquistadors began calling themselves blanco in order to state their superiority over the aztecs.