Not to mention the scale and nature of the "dataset" that our brains were trained on. Millions of years of instinct encoded in DNA, plus a few years gathering data from dozens of senses 24/7 (including chemical receptors, like you said) and in turn manipulating our bodies, interacting with the environment, and observing the results. We've been doing all of this since embryo.

We can't just feed a model raw image and text data and expect it's intelligence to be comparable to ours. However you quantify intelligence/consciousness whatever, the text/image model's thought processes will be alien to ours, which makes sense because their "environment" is nothing like ours - just text and image input and output.