Why would it be relevant whether this specific person is intelligent or not?
He is just being used as an example. I could choose anyone that doesn't seem to be attractive. If he is intelligent, would you consider him to be sexy?
Unless you contend that all intelligent people are physically attractive, it is beyond the point to prove any given individual is intelligent.
Intelligence is a basic, minimum requirement for me to find any man worthy of a date. It's not the
only factor. I'm also fond of wit, gentleness, charm, creativity, poise, self-confidence, consideration for others, the "disheveled mop of black hair + scarf" combo, well-groomed beards, good health, independence, multilingualism, good dress sense, non-theism, a philosophical nature, sincerity, integrity, physical demonstrativeness, boldness, courage, literacy, vulnerability, nice pecs, soft skin, socialism and the ability to play a musical instrument.
If the guy in the picture had several of these qualities
in addition to intelligence, chances are I would find him attractive enough to warrant a date.