Google found a bunch of spammy links like this dating back years and years, and we took manual webspam action regarding this site before this so-called "detailed expose" of negative SEO ever came out.
Like many of the reports of "successful negative SEO" that we've investigated, the claims didn't hold up. In this case, we had already caught the site in question for spammy links going back years and years--long before the negative SEO campaign started.