Show me your definition of intelligence and I will show you how people might reasonably disagree with it.

(The simplest refutation would be that demonstrating intelligence requires first demonstrating motivation on the part of the subject. The current way we interact with "AI" is much more akin to prodding an organism with a stick, seeing it recoil in response to the stimulus, and then claiming that it therefore has intelligence. No, you haven't demonstrated intelligence, you have at most proven it has an autonomous sensory response -- anything beyond that is confusing the complexity of the response with complexity of the mechanism producing it).