Fascinating article. It communicates many principles which I’ve been innately aware of for some time in a concise, thoroughly researched manner.
People just aren’t logical, and they aren’t reluctant to make sub optimal decisions in order to preserve the status quo of social posturing and self-identity.
It’s not even emotion, so much as self-interest. Both reason (coming up with better rationalizations) and emotions (signaling your dominance or good character) play a role in this.