IF autism is a kind of neurology that creates a spiky cognitive profile where each human trait is more prone to being stronger or weaker than the norm, then that could include some of us being outliers for a variety of intellectual abilities.
Many of us have dyslexia, dyscalculia, dyspraxia etc but others might struggle with logic, memory, abstraction, learning - with enough ducks in a row that could = Intellectual Disability.