I have never seen anything else use the (name value) syntax. You do deal with obvious data types, the REPL tells you exactly what those data types are (records, in the case of Guix). Schemes outside of Guile don't even have keywords, much less named arguments.

Are you complaining that a language has both associative containers and structs? Which one do you advocate for removing in Python to keep up the precious "Zen"?