What this man did was find compassion for less intelligent people by becoming one. It is the habit of humans to condescend to less intelligent people, and to envy or undermine those who are smarter. Reaching across the boundaries of what is familiar to us and nurturing compassion there is difficult; this is a case where someone was forced to take a new perspective, and couldn't help but grow that compassion, because people who were previously so unfamiliar became uncannily like himself.

I'm not trying to trivialize his journey; he just as easily could have spiraled into a feedback loop of self-hate and self-pity. It's admirable that he accepted the change within himself, and I enjoyed reading about how awestruck he was as he observed the emotional change within.