Not at all. Less is more. By using specific constraints (rules for sexprs), one creates a wider array of possibilities. By having no rules (text), one has to

Not at all. Less is more. By using specific constraints (rules for sexprs), one creates a wider array of possibilities. By having no rules (text), one has to provide a rubric on how to parse the text. And when you have to parse, you have to write a parser, and define the parsed format.