I don't hear P-interest users complaining. With some content you might want to use a 'Masonry'/'Isotope' layout as P-interest does. That comes with a ragged footer and doesn't really work unless you have infinite scroll.

As for the nonsense about 'never getting to the footer', the footer can be stuck to the window or dispensed with entirely, again a-la P-interest.

It is very easy to put together a '10 reasons why I hate this' blog article, it is much harder to put something together that works to the delight of millions.