tagging defaced based on the following interpretation of the Degraded subsection on Defacement (emphasis mine):
""Degraded" includes any sort of intentional bad-faith sabotage of the core content, including but not limited to excessive downsampling, blurring, pixelation etc, as well as leaving out core content."
Posting 10 images of 36 (according to the Toranoana page) - barely a quarter of the book - for no other reason than to attempt to drive traffic to some other site, which does not in fact contain the remaining 75% of this raw, is as clear a match to the letter of the law as I can see.
This does not count as a sample because this is not a "freely distributed portion of a complete work." This language strikes me as being specifically released by official sources, which this very clearly is not.