Earlier quoted context omitted.
If you are applying this to computer games, I see your point. If you are applying it to 5-star reviews for $20, then I disagree. (Luigi Barzini mentions an Italian book on card-playing--written, I think, by a clergyman--that begins "Always try to see your opponents' cards." He was trying to point out the light value to that Italians assign to official rules.)
But this is life, and there's not really a difference between "arbitrary rule system designed for a game" and "arbitrary rule system designed for 5-star reviews". They're both just "arbitrary rules", and some people are going to Play to Win. So what are you going to do about them?
Having that "arbitrary" throw mechanic in the game was done intentionally to make the game more balanced and enjoyable for the customer. The only people complaining about it are very very early beginners, who don't realize that removing that mechanic would completely break the game balance and make it unplayable. It is an advertised feature, not a bug, in this specific scenario.
I don't think that we can say the same about paid reviews on Amazon. It isn't a rule (i.e., Amazon doesn't require every seller to offer gift cards in exchange for 5-star reviews), and it doesn't exist to increase the value that Amazon marketplace provides to their customers, it does the opposite.
P.S. I actually agree with what you said completely. It just that the comment that brought up the videogame analogy didn't realize how completely different the situation there was, so it ended up derailing the further chain of arguments.