He seems to be maturing in reverse
His best work was his first, the second "Unbreakable" was good but it seemed to be lacking something - it felt as if you got only half a story when the movie ended. "Signs" was atrocious - come on, aliens who are defeated by water? That comes from the very bad B movie category
So, yeah, I can't speak for everybody but I'm with you in saying that people should drastically alter their expectation about M. Night Shyamalan - they just shouldn't expect another "Sixth Sense" from him :-)