As written in the title "Cloaking AFFILIATE links" this functionality
should be used just for AFFILIATE LINKS. The problem is that theporndude is not using these links just for the affiliates. Theporndude is using them to don't show to Google the links that he thinks could be bad for it. This is named "Cloaking"
https://en.wikipedia.org/wiki/Cloaking.
Reason1: disguise A-B reciprocal links (more than 50)
Reason2: links to websites in other languages (E.G. brasiltudoliberado .com)
Reason3: links to those websites he thinks could be affected by malware (E.G. sexu .com) and so on.
He thinks that for Google these links could be bad, so that he though was a clever idea to hide them as "Affiliates".