Is it a brain, though? As far as I understand it it's mostly stochastic calculations based on language or image patterns whose rule sets are static and immutable. Every conceivable idea of plasticity (and with that: a form of fake consciousness) is only present during training.
Add to that the fact that a model is being trained actively and the weights are given by humans and the possible realm of outputs is being heavily moderated by an army of faceless low paid workers I don't see any semblance of a brain but a very high maintenance indexing engine sold to the marketing departments of the world as a "brain".
The implementation is not important, its function is. It predicts the most probable next action based on previous observations. It is hypothesized that this is how the brain works as well. You may have an aversion to think of yourself as a predictive automaton, but functionally there is no need to introduce much more than that.
It's still a neural network, like your brain. It lacks plasticity and can't "learn" autonoumously but it's still one step closer in creating an artifical brain
Add to that the fact that a model is being trained actively and the weights are given by humans and the possible realm of outputs is being heavily moderated by an army of faceless low paid workers I don't see any semblance of a brain but a very high maintenance indexing engine sold to the marketing departments of the world as a "brain".