Bob keeps repeating this "idiom" as if it makes him sound deep and philosophical, but here is what intelligence has to do with one's moral character: Jack shit and Jack left town. How about we review some virtues. How about kindness? Oh, wait, Bob want to disenfranchise an entire demographic (working class whites) and deprive them of their ability to make a living out nothing more than sheer malice. Compassion? Nope. Bob loves to treat them like non-humans and revels in his cruelty towards them. Good temper? He spends half his waking hours raging on Twitter. Humility? Fuck, would Bob have a nearly 2000 page thread on this forum if he had a shred of it? I didn't think so.
Intelligence is an attribute and not a virtue. There are people who are highly intelligent and commit horrible acts. There are likewise people are ignorant but still lead moral lives. If ignorance is a vice, what does that make people with learning disabilities? They would be "evil" by Bob's definition because they are not as intellectually capable as the rest of the population. People who live in countries with fewer opportunities for education (notably in Africa) would similarly fit that definition as well. If we were to borrow from the Social Justice lexicon, would that not make Bob an ableist, and potentially a racist?
As many here have illustrated ad infinitum, Bob has all the self-awareness of a sea sponge. Had he truly a philosophical bent he could see how such a declaration is problematic.