There were 2 typos in that sentence (the one I didn’t mention is “fully” instead of “full”). Talking about intelligence in such a sloppy manner sounded like a joke to me.
I'm not the same person, but probably. There are at least two errors in the quoted fragment, though personally I don't think either is especially indicative of a lack of intelligence.
What an example of a sentence a person *whose intelligence is lower than you might expect would write. I can only imagine this was intentional.