Getting an order wrong in a restaurant is not.
The scenario never said I made an order. Here it is again:
Suppose you were given corn, mashed potatoes, and chicken on a plate.
The scenario isn't your order being messed up; your order wasn't chosen by you in the first place.
Also entertaining content is subjective.
All reviews are subjective. We wouldn't bother reading reviews if we ignored everything that is subjective. I gave Nakamura plenty of opportunities to win me over. He failed. Why should I keep giving him opportunities whenever each time ends the exact same way as the last? I know I won't be entertained by Nakamura and watch Smackdown specifically to be entertained. I'm not wasting my time on him. And as you point out:
Getting someones opinion on fish who doesn't like fish is useless.
Thus, my opinion on Nakamura would be useless since I don't like him. In other words, I shouldn't watch his matches/segments.
...you can't provide a valuable opinion on Smackdown if you haven't even watched most of it.
I have already dismissed Nakamura as a poor performer. A person that is a poor performer is more likely to put on bad matches/segments than a person that is not a poor performer. This makes it reasonable to ignore poor performers and pay attention to good performers, especially whenever I'm watching Smackdown to be entertained. If I know I won't be entertained, then I know that portion of the show can safely be assumed to be poor. Thus, rating it low is acceptable. I'm comfortable with trusting my intuition here.