I doubt many guests even notice the Yeti anymore. And if they do, many probably don't know he's supposed to move. But that doesn't excuse Disney from willfully putting on an incomplete show. I'd direct you to Kevin Yee's article today on his so called "Rizzo Factor" (They're tourists, what do they know?) and how it's led to the maintenance decline property wide.
http://miceage.micechat.com/kevinyee/ky021412a.htm
It doesn't make the current shape of the resort acceptable when guests that probably don't know any better are completely okay with diminished maintenance and offerings. Disney says it's out to produce the best experiences out there. Not broken ones. And DAK is the worst offender in that department (followed closely by the MK). The more excuses that are made for lapses in maintenance, the more they'll happen.