ROTJ is a disappointment so many levels that I have no problem putting R1 (and even TFA, in my opinion) above it. Not sure if I agree with ROTS though.
It has a multitude of problems but it also has some of the greater moments in the Saga. And I’m talking about character shit, not spectacles like Vader butchering Rebels with his lightsaber. In general ROTJ had more substance and for that reason alone I can deal with the Ewoks because I care about the Galaxy and the characters trying to liberate it.
The excruciating 40 minutes at Jabba’s palace alone is enough to make me want to watch something else. The Luke and Vader scenes are great, but they still can’t justify me wasting my time with the parts that I don’t enjoy.