Like I've said "Octomom" is entirely different than The Duggars or any other TLC family. There isn't a comparison, imo.
And I'm sorry....if I was Kate and had a tummy like she use to from having 6 wonderful beautiful children that she adores and loves and someone offered me a tummy tuck.....HECK YES, I would take it and I wouldn't feel it was exploitating my children AT ALL. In fact, I would be feeling better about myself and that would do my children a world of good. I don't really see how this is doing any harm to anyone.