People that don't work at Yahoo! telling people that work there to quit remind me of the pope telling other people to abstain from sex. If you're not playing the game don't tell others how to play it or to stop playing it.
Yahoo! has had a rough time but it still has plenty of life in it, let's wait to see what they intend to do once they've found their new bearings.
Carol Bartz was a disaster, she did the worst thing any CEO could ever do, which is to wreck the culture that pervaded Yahoo!. Now it is up to new people to try to restore that culture or at least a semblance of it and then possibly the oil tanker can be turned around. It isn't over until the fat lady sings.
Yahoo! is huge, has a pile of interesting tech, lacks polish and needs focus. If Apple could be turned around then so can Yahoo.