Now that is funny, because my wife parboiled ribs too. I worked on her and worked on her to let me try smoking a slab, with her saying NO, her way was fine. One day we went to get some slabs at the local Winn Dixie and this little old lady, probably about 4' 10 was selecting packs, by going over them very closely. She looked liked what everyone would picture a perfect Grandma to be. I approached her and asked how she did the ribs. "I smoke them on my smoker!!" I told her my wife likes to par-boil them first, then place on a grill. She looked and my wife and shook her head, "honey, your boiling all the flavor out of them".
My wife let me smoke a slab that weekend and we have never looked back at par-boiling ribs again.
Isn't it funny how no matter what you say it's wrong, but then some stranger says the same thing & all of a sudden it's the Gospel.