Mavericks said:

this type of utterance sums up the whole anti-ROTJ position.

Incorrect. The people who don't like the film are the people who don't like the film. There isn't an anti-Return movement. You're seeing a war that isn't there.

That's why I'm not "a fan" of Jedi....

how did I manage to became "a fan of Jedi"?

Pick one.

an average person can't even it explain in the way other than "I dislike this, I like that"

They're not required to. No one is. People go to the theater, they buy a ticket, they watch the film, they either like it or not. There doesn't have to be some sort of psychoanalytical soul-search to validate their likes or dislikes.

if you're interested in a constructive debate

I'm not. This is a discussion forum, not a debate class.

you're wrong

I believe the phrase you're looking for is "I disagree".