In my reading, the assessment was funny exactly because it was emotional and therefore biased. That's what use of "son of a bitch" suggested as well.
Emotion drives value and purpose; logic is compatible with emotion; Spock is a bad example for rationalists.
This is our monthly thread for collecting these little gems and pearls of wisdom, rationality-related quotes you've seen recently, or had stored in your quotesfile for ages, and which might be handy to link to in one of our discussions.