Heisenberg said:Quality itself is subjective though, one person's opinion can't be stated as a universal standard.
Nothing is really subjective, only people lacking the intelligence or methods to objectively judge one thing.
One person's opinion can't be stated as a universal standard, but when he gives arguments and it makes sense it isn't wrongful of him to rage at others claiming the opposite (especially when it's really stupid for them to do, not saying it to you, but many supporters of this trilogy are extremely annoying, check youtube comments in the most viewed Aria video for example).
Also even a billion people's shared opinion can't be stated as a truth just because they are many people believing it, if such a thing is used as an argument that would be an argumentum ad populum fallacy.