How is it's process (inputs, training weights, processing those weights based on an initial given state -prompt-) different than how a brain thinks? And is it a difference of architecture and scale (like an ENIAC and a Apple Silicon M5) or a difference of fundamental operation?
While I'm sure professionals in neuroscience or philosophy can expound on this topic in a more satisfactory manner than myself, I think a relevant point is that despite all our efforts we still don't know how brains think.