A "smarter" language/parser has implications, though. It means your text editors & IDEs need to be more elaborate to handle it. It means new users have more to

A "smarter" language/parser has implications, though. It means your text editors & IDEs need to be more elaborate to handle it. It means new users have more to take in before they can be productive. It's more complexity and thus more effort to maintain. All in all, making a smarter language/parser means making a more expensive language/parser, and that means you're making a tradeoff that isn't always justifiable.