Some of these pictures are developed more with software than others. It is the artist's prerogative how much he or she develops a picture with software. It is each viewer choice to decide whether heor she likes the development choices made by the artist. None of which is wrong or right.
My issue with the posting of these pictures is they were created by a number of different artists. I wonder if the web site owner has permission from each of these artists to reproduce their work. It is a copyright violation to reproduce an artist's work without their permission.
"The reason you have a good vision is you're standing on the shoulders of giants." ~ Andy Batcho