I think pretty much everyone on here realizes that the move is propaganda. If you have any doubts, go to the movie's webpage and it will become even more obvious.
Despite it being propaganda, there are some truths behind it. Will it stop me from supporting the park? No. Do I think Sea World needs to continue to change their practices. Yes. If SeaWorld cared for the animals now the same way that they were cared for when Tilly was in Canada (yes that was NOT Sea world) there would reason to boycott, but that is far from the case.