I'm sorry my friend, I didn't realize you were serious about this. So, here's how I see it... More or less, all the pictures I've submitted here have been loaded and post-processed on Photoshop. However, I tend to submit them under "photography", mainly because those pictures, no matter how manipulated they may have been, they were originally taken by me and were composed carefully (as I like to believe) on camera.
Now, regarding this particular one, I could agree with you that it may have been too manipulated to be considered a photograph. But the truth is I didn't think about it when submitting it here, it was just an experiment, something new I tried and I wanted to receive some feedback. Besides, I never denied it was done on Photoshop. A few days later, it received a DD, which I didn't ask for and, to be honest, I didn't expect. In each case, under these circumstances, I don't think I can change the category now.