If you did read it, you'd know the article claims that systemic bias leads some to be privileged over others in society, thus causing them to be more willing to

If you did read it, you'd know the article claims that systemic bias leads some to be privileged over others in society, thus causing them to be more willing to take risk since they perceive less risk in the first place. The "white male", in that case, is used because it was an American study, and in America "white males" are privileged due to socioeconomic structural biases. The article goes on to point out that in a more egalitarian country like Sweden there is far less gender bias in risk taking, which further supports the article's claim. The article then goes on to discuss similar biases in China, where, again, males are privileged, though obvious they aren't "white" in that case. If one is reading this article without an intent to take offense, one would realize its conclusions would lead us to predict that, in truly matriarchal society, it would be the women who would predominantly be risk takers.