I don't follow any of the logic used in the article. Is this a 7.1/5.1 theater? Then yeah, a large floorstanding speaker is most enjoyable over a bookshelf.
However, if you're listening to critical stereo, then I would never recommend the typical floorstanding over a pedestal mounted speaker (bookshelf went out in the 1990s). A good quality pedestal mount will out perform by minimizing the point source, rather than spreading the sound out over 4-5 feet of space where you lose the individual instruments. I have the Paradigm Monitor 11 fronts on my surround system, and they are amazing for surround to give the power with the necessary detail. However, I also have a 500watt 12" sub to support the very low end.
Another point is the use of a subwoofer with a pedestal mount (Swans M1 with Klipsch 8" downfiring 200 watt sub). It may take more than five minutes to set the two together, but mine are perfectly matched to the point I don't her the sub at all. I only hear the full range coming from my M1s. Then again, I don't play loud obnoxious rock with guitars that have so much distortion it make me nauseous. So maybe if you play that stuff regularly, it would behoove you to buy a big old floorstanding speaker to feel what you're listening to. Adieu!