Its very simple:
If you dont like what you watch, its ok.
If you actually know what is going to happen, then more obviously, dont watch.
If you didnt watch? Why do you comment?
If you dont really care? Why do you comment... specially if its nothing good to say?
I know everyone is free of saying anything one wants, BUT:
If you have nothing good to say, its better not to say anything.
Why? Well, because its mean.
Doens't matter if a proposition is truth or not, if it's mean, it's mean.
Some of us think mean is bad and wrong.
If you want to be mean, that still may be ok, but you are a real bastard.
These forums are free so people can express whatever people want as long as it's within the rules.
Still, when you make mean comments, with the only purpose of making one feel bad about one's expression, that takes the freedom away, because one ends up feeling bad about it.
Be better person, consider others, and don't take that freedom away, or that confort away by really unnecessary comments.
Thankyou