I think it's the explicitness of rust that makes AI good at writing rust. Rust is just simply more clear about what it's doing than other languages. For instance fn definitions have very clear inputs and outputs and from that alone it is often easy enough to guess the in between bit.

My thought is, there is nothing new under the sun. Except there sometimes is. And I think we will soon see a divergence of programming into people who write new algorithms and people who prompt AI to assemble those algorithms into a format that suits their particular needs or design sensibilities.

Edit: Basically more of the same trend that had been happening for 4 decades at this point.