The 'intelligence' label has been applied to computers since the beginning and it always misleads people into expecting way more than they can deliver. The very first computers were called 'electronic brains' by newspapers.

And this delay between people's mental images of what an 'intelligent' product can do and the actual benefits they get for their money once a new generation reaches the market creates this bullwhip effect in mood. Hence the 'AI winters'. And guess what, another one is brewing because tech people tend to think history is bunk and pay no attention to it.