All these "AI" code assistants are just a more elaborate form of probabilistic template system that generates code from large training data set.
Not to mention that if a new programming language, with a completely unique semantic and syntax, is to be invented in the future, and become popular, then these AI code assistants will be useless with that language, as there's no training data to infer from.
Hell, all of these AI code assistants are already pretty useless with less mainstream or niche programming languages, so the idea that programmers are exclusively using these tools to write code for them is just silly.