This does show that ethnocentrism tends to win, but this is not a white pill.
It's important to ask why it wins.
It started off with a ton of humanitarianism. Those who were ethnocentric in the face of humanitarianism were more successful than the groups that were humanitarian. The groups who were humanitarian died out and the groups that were ethnocentric prevailed.
This doesn't mean eventually whites will adopt ethnocentrism. It means the groups that are currently practicing ethnocentrism will prevail.
If that's a white pill for you you might be interpreting the results wrong.
Yeah, the future will be ethnocentric again when it's all black. What a happy future.