RE: Stupid question of the day.
I have not seen an ARF kit yet that didn't require quite a bit of rework / repair / redesign to get the plane up to reasonable standards for flight. The only reason I buy ARFs is from sheer laziness to build the entire airframe myself, but for the models I really want to show off and fly properly, I will either buy a good kit or scratch build the entire thing myself.
I guess it all depends on each person's personal standards of quality.