Great post, informative and precise.

I think the challenge is primarily the context and intent.

The spellchecker knows my context easily, and there is a setting to choose from (American English, British English, etc.), as well as the paragraphs I'm writing. The intent is easy to recognise. While in a codebase, the context is longer and vaguer, the assistant would hardly know why I'm changing a function and how that impacts the rest of the codebase.

However, as the article mentions, it may not be a universal solution, but it's a perspective to consider when designing AI systems.