Can you become a Game Changer for just one game of your choice?

I’m not sure how this works for other EA titles, but you can become a Game Changer for the game you’re “creating content” for.
In my case that is both The Sims 4 and The Sims Mobile, I answer both of those forums. Creating content you would think it’s creating a video or image, but in my case, it’s coming up with answers.
Finding walkarounds or ways to fix issues players are having. Gathering information to make guides or even fill the bug list.
You can apply to any title that has applications for Game Changers, getting accepted is something entirely different.