So, he got subject-verb agreement wrong when the subject was separated by a long modifying clause containing a noun with a different grammatical number, big deal. Only grammatical pecksniffs regard such a lapse as indicative of lack of intelligence. More likely it's indicative of lack of proofreading. And don't forget he was educated in Indonesian schools, hardly the place to pick up the fine points of English grammar. The real proof he's not very bright is provided by the dog that's not barking: if he were smart, he'd have released his Occidental, Columbia and Harvard transcripts to prove it. Well, unless the real reason for hiding them is that he was admitted as an international student with Indonesian citizenship, in which case they'd be hidden away even if they showed a 4.0 average.
Indeed!
it’s well known that being “audacious” requires a type of smart that universities did not used to award degrees in.