I think you misunderstand the uncanny valley concept. In fact, your entire rebuttal is mostly a restatement of the concept itself.
The point is the more realistic something is, the more disturbing any 'defects' in it's simulation are. Stuffed animals don't breath, they don't move, they don't growl. Neither do paintings. These things may be realistic in the sense that they portray a snapshot of the thing they are based on, but they don't come anywhere close actually convincing you that they ARE the thing they were based on. I don't know of anyone who would mistake a stuffed bob cat sitting in someone's den or a museum as the real thing for more than a few seconds. Likewise, people pretty much know when they are looking at a painting or even a photo.
All of those things are on the 'safe' side of the valley. The problem comes when you start getting things that move, sound, and mostly act as if they are alive but clearly aren't. Your actor with the no-spill glass would be in the valley, so to would be photorealistic computer models that didn't have facial expressions when they spoke (ala FF).
And for the record, while the uncanny valley was popularized by talking about computer generated graphics, it was actually coined by a roboticst back in the 70's, and was based on an idea first presented by Freud in the 1910's.