People are probably going to say this is silly (and maybe the author would say the same), but I think it's an awesome demonstration of what Rust macros can do, and I think it could also become genuinely useful for non-English speakers who want to write code in an English-centric landscape. Most people in France and Quebec probably know enough English to work with English keywords in code, but I bet for people in lots of non-western countries it can be a real hurdle in terms of approachability and readability.