I would have to agree. If I was a WDI person reading the petition, I'd think, "They don't like the new soundtrack" not "They want the old soundtrack back." At no point in the petition does it actually SAY "bring back Tom Morrow" or even "bring back the old soundtrack." In fact, the petition doesn't really petition anyone to do anything. All it does is show that a bunch of people agree that the new soundtrack is bland.
A petition is supposed to be a call to action. It's a request for a change. This doesn't request Disney do anything. It just says "We don't like it."

If you ended the petition with "Please bring back the original soundtrack", then it gives Disney something to consider.