So he's redefining delegation in your own sense (implied by his strange titlebait "The Gang of Four is Wrong") and then criticizing everyone else post hoc?
I'm the author. I'm not redefining delegation. I'm pointing out that the Gang of Four, who cited Henry Lieberman who created the term, described it incorrectly. You can read the citations in the Design Patterns book and see exactly what they got wrong. Here's a link to Lieberman's work http://web.media.mit.edu/~lieber/Lieberary/OOP/Delegation/De...