At least 10 times before was pointed out that complaining AFTER the damage is done - useless. Also, it's been pointed out that fans like their games done right. Constructive criticism, saying what you don't like...call it what ever you want. Someone made a good point that fans do it because they are concerned about it.
And last, people have the right to do it, they aren't insulting anyone and it's not against the rules. So..yeah.