Except that in practice people also indent their code, making the parentheses redundant clutter, especially since the usual convention is to put all of the closing parentheses at the end where it hard to immediately match each one up visually with its corresponding opening parenthesis.

My preference is for the way Haskell handles this, where essentially there is a syntax built on braces and semicolons that you can always fall back on, but most of the time you can just use indentation and it will figure things out just fine via built-in layout rules.

Finally, it seems immediately apparent that this is a type-1 lisp given that there is only one syntax for assigning to symbols and it is used both for functions and for other values.