I probably did because as I said, you contribute nothing but acute negativity, and inexplicable assumptions (IE: Sony must not want to pay for 3D glasses because they don't have faith in the movie).
To answer your question, they are likely doing it because of the rapidly declining 3D sales. Less and less people are seeing films in 3D and they could potentially be worried about the movie's 3D sales. If 3D movies continue to be as ****** as they are, that means that that 3D audience is only to get smaller and smaller by the time TASM rolls around. I wouldn't call it a lack of faith in the product so much as a lack of faith in the 3D market.