It's also interesting that SW seemed to get punished, although still retaining large popularity, as it became more ambitious and move away from black-and-white morality/perspective: TESB was initially the least popular of the trilogy for some time and part of the negative reaction to RotJ and the prequels was focusing on making Vader someone who could be redeemed
My understanding is TESB was popular among the fans from the very beginning.
There's no great moral ambivalence in TESB, just a cliffhanger ending.
Nor do I recall any great reaction against Vader's atonement in RotJ, though of course intellectually many speculate whether his turning good in the end makes up for the vast numbers of people he murdered. But in story terms, RotJ flipped the script in a way now fairly common in genre fiction, by having the chief baddy demoted to level two and given an emotional tie to the hero to justify them taking out the new Big Bad.
Also, Ewoks = naked Jawas.