That's because the representation of that AST seems to be defined in terms of Python's objects, so it looks unwieldy.

Compare with Lisp:

Code: x

AST: x

Code: (let ((x 5)) (+ x x))

AST: (let ((x 5)) (+ x x))

And as for the very little syntactic sugar most Lisps have:

Code: 'x

AST: (quote x)

:).