Poser is a tool for artistic expression.  The use of other digital imaging programs to enhance Poser work are also tools.  I don't get the whole "no post work" thing.  I want my images to look the best they can so I post work and all the graphics professionals whose books I've read do to.  

The bottom line is if people want their work to shine they should become intimately acquainted with any of the number of great graphics programs out there, even if it's just to make an unwanted seam invisible.  You don't have to have a lot of money GIMP is free and e-frontier has even given Art Rage painting program away.