The NPUs are good, provided that they can be used the same way dedicated GPUs are used: By 3rd party applications to accelerate certain intensive tasks when you demand them.
However, shoehorning AI into the OS itself definitely screams buzzwords. AI and OS's are polar opposites: You want an OS to be fast, predictable, and reliable. AI is currently slow, extremely unpredictable, and hallucinatory (i.e. unreliable).