Those are interesting, but there's a difference in the manipulations that are done for image for journalism and image for art. That has crop, resize, and grayscale... but not things like "selectively dodge and burn", "adjust the white balance", "skew or rotate to level horizon", or "correct for chromatic and coma aberration in a particular lens."

While that is good and useful (and I would be willing to even go so far as saying "needed" for journalistic uses), the transformations available are remarkably limited for artistic use that even represent what can be done in a traditional darkroom.