>But if it is genetic that doesn't really mean it's fundamentally different than ChatGPT, it just took a different and drastically longer training period and then transfer learning when children learn their mother tongue.

It doesn't necessarily mean it's fundamentally different, but it doesn't mean it is comparable either. Geoff Hinton doesn't think the brain does backpropagation. Training a neural net uses backpropagation. So if Hinton is correct then saying "it just took a longer training period" while brains doesn't learn like our current neural nets is glossing over a lot of things.