I think how you view ROTJ has a lot to do with how old you are and when you saw the film for the first time.

I saw it on opening day in 1983, and back then, there were very few complaints about the film (at least among kids my age) and the reviews I saw were positive as well.

It seems like it took about 20 years for people to decide they didn't like ewoks (lol!) I'm sure there were some who didn't like them back in '83, but my point is that I think that the general consensus was that the film was a home-run, a feat made all the more impressive by the fact that there was SO much anticipation built up for the film.