I uploaded the Windows XP desktop wallpaper into the image classifier. Just the raw image file. It gave me the labels "monitor", "computer screen", "desktop". "Field", "sky", grass", that kind of thing were nowhere to be found.
I know this is more of a comment on the state of AI models than Transformers.js. It's probably not even representative of state-of-the-art image classifier models. Just a fun example of how these things learn.