that article is about migrating urls from one method to another, It is not about backlinks. I can assure you that any average webmaster will not have an aggressive link building campaign that builds fast enough to raise a red flag..
Like i said. That site is about adding a large quanity of urls. Example:
www.thesite.cim/12345.htm and then
www.thesite.cim/123456.htm and the subdirectories have small changes , but they are showing up in mass. This looks like a dynamic page generator to google and is a spammers or "blackhat" trick.
Believe me that you have a better chance of getting in trouble for over doing onpage than for link building as long as you are not linking to a bad site.
This is not just experience from 1 or 2 sites. I currently have over 200 seo clients. I build pretty agressive link campaigns and have yet to build too fast.
see you at the top!