The point of that paragraph was:
He goes on to say:
Code which moves too quickly from left to right (and back again) mixes major control flow with minor detail.
Real code of course requires substantial subblocks, necessarily indented, and these subblock will then have their own indentation battles to be fought.
These Seven Pillars of Pretty Code aren't the last word, or even the first word, on good code.
Fair enough; make your code good first, and when you have good code then you can deal with making it pretty. But you don't sacrifice the goodness of your code for prettiness.. it's like marrying an ogre in a bridal dress (pretty outside ugly inside, or covered-up smelly, or any other significance you attach to the image) instead of the paper-bag princess ;)
But for good code they are, I believe, what distinguishes the readable and pretty code from the rest.