That photo you use as an example of yes someone would is totally different. In that situation there was no car engine covered in blood and guts which would take hours of detailing and cleaning. Why would someone almost ruin the engine filth wise for those photos? That would be stupid.
That photo is also to make people fear "man eating" snakes. No one is going be scared of ball pythons on their engines from now on, it doesn't serve the same purpose as the above doctored photo.