That's not what I mean when I say justify. Justifying your opinion as in explaining it is cool, justifying by offering some sort of reason that subtly hints that the other side is biased in some sort of way, which is what I see plenty of in a ton of BvS threads, is not so cool. "I enjoyed BvS, because I like variety in movies!" kind of passive-aggressive comments is what I'm talking about.
I mean, sure, I was generalizing when I said each and every time, but holy hell does it happen frequently. You're in general agreement when the overall sentiment though, yes? That this sort of attitude is prevalent and shouldn't be?
You seem way too focused on talking down someone who seemed genuinely happy to have enjoyed a film and surprised that people were so negative on it. There has been plenty of stuff that's way more toxic with regards to BvS, like people who dislike it going out of their way to suggest that those who like it have mental illnesses, or that people who enjoy it simply don't understand the real characters of Batman and Superman, etc. You know what I don't like, I don't like bullies.