Any advantage in LISPs having simpler grammars than Python?

[seberino at spawar.navy.mil]

Is there any advantage to a language having a nice mathematically
compact grammar like LISP does? (or at least used to?)

Many have admired the mathematically simple grammar of LISP
in which much of the language is built up from conses IIRC.

Python's grammar seems complicated by comparison.

Is this anything to worry about?

Chris