cool experiment, but whitespace is a terrible delineator. ironically one of the most disliked parts of lisp by newcomers, the parens, ends up becoming its greatest strength once you have grokked things.
I’m used to whitespace as a delineator thanks to python. If used judiciously it can be a great benefit.
I do admit it would be nice if it were optional so you could have more complicated expressions than you can easily write with paired brackets/braces/parentheses.
Editor fonts which replace spaces and tabs with what are essentially the appropriate periods or similar make this not a merely hypothetical or anachronistic point.