I think what it really comes down to is whether you are looking for the good or the bad when you're watching these movies. With the prequels, the lameness tends to override the good parts when you are trying to enjoy them, but watching ROTJ, there is so much good here if you are looking for it and not ways to tear it down. More than tolerable IMO. It has jaw-dropping moments. That is why so many people have said it was their favorite for so many years. I agree that it has become trendy to bash ROTJ, but I think it has a lot to offer and a very cool ending to the trilogy. And in terms of moral lesson it is the very best of the OT, hands down.