There's been a trend of closings with no replacements. Both attraction theaters near The Great Movie Ride are dark (Idol, Sounds Dangerous) and the above mentioned recent closings.
I think people are also reacting to the rumored/future closings expected, such as Muppets and Voyage of the Little Mermaid. People are worried there will be a lot less before the new expansions open. If you have a park hopper ticket, go and enjoy. If you have a ticket that limits you to one park on a day, then evaluate what IS open before you commit.