True about most controversies, but global warming is waaaay beyond that old shell game.
The beauty of global warming is that you no longer need to cherry pick data. ALL data proves the theory!
If it rains more, it proves global warming. If it rains less, it proves global warming. If it snows in Bora Bora, it proves global warming. If a frog in Shnitzville Ohio goes extinct, it proves global warming.
That's why global warming is the greatest scientific theory ever invented. And if you disagree with that, your very disagreement proves global warming.
I have noticed that my car has vapor lock more now than it did when I bought it a few years ago. This proves global warming is real. Everyone knows that the warmer it is the more often you get vapor lock.