Online petitions are never as good as real ones. I suggest if someone really wants to make an impression of the PTBs about this, that they get people to put pen to paper and send signed letters.
Better yet, though, would be for folks to remember that lack of patronage translates into a greater likelihood that attractions will be decommissioned. So while this offering is probably already history, look around WDW at the things you enjoy. Do you always visit them? Do you visit them multiple times per trip? If not, then don't get too attached to the attraction. What's worse -- is the place empty when you visit them? If so, then you really need to start selling the attraction and get other visitors to visit the attraction in large numbers, or prepare yourself for the possibility that the attraction will be closed.
The time to "save" an attraction is long before it is slated for being closed.