So yes, people can bless Go and Rust all they want. Nothing is wrong with the languages, but I agree that learning them for the sake of AI usage is probably not the best idea if one is competent in a language already.
Disclosure: Lattner is one of my programming heroes, so I might be biased.
There is an excellent chance it will be awesome stuff. But they did themselves a huge disservice with the initial claim about trying to be Python compatible.