As said in the previous post does his story make sense? Lets say the board runout is KdQd8s-4c-4h and Villain check-called flop and turn out of position but donk lead river for full pot, then what is he really representing? He is kind of saying, he has trips, but for him to have trips it would usually have to be with 4dXd exactly, because otherwise he would have folded on the flop. There are very few combos of 4dXd, so Villains value range is very thin.
Moreover donk betting makes no sense, if he is strong, since we are often going to bet again on that card. If we have a busted diamond draw, checking is his only chance to get paid, and if we have top pair or better, we will usually also bet again for value, because 4h changes nothing. So if Villain actually had trips or better, he would usually check to us. For that reason we should not fold any hand, which we were still betting for value on the turn. We expect Villain to show up with a busted diamond draw or a random bluff often enough to make a profitable call with for instance AA, AK or KQ.
If on the other hand the board runout is KdQd8s-4c-9d, and we face the same action, now Villains value range is much wider, because his diamond draws got there, and there are also some hands, that made two pair or a straight on the river. It also makes more sense for Villain to donk bet the river for value, because we might check back a lot on this card. So now we should be much more likely to give him credit, and maybe only KQ is strong enough, that we have to call, whereas AK and AA can be folded.