Dana doesn't run the show anymore and he had to watch his personal friends like Chuck and Hughes get scuttled almost immediately after WME took over.
It was a misstep on WME's part, not Dana. Big picture, Goldberg probably doesn't mean much, but it would have cost them nothing to acknowledge nearly two decades of commitment from the guy. Simple tip of the hat. It would have been seen as a classy move by the hardcore fan base.