The creator crew it's not only for streamers and video creators. It's for all types of content creators: Writers, Musicians, prop makers, cosplayers, podcasters...
Also, it's a great strategy for both rare, and content creators of any size.
It helps Rare to promote their game, remember all of this is marketing, and it helps content creators because Rare will give them advice on how to grow, how to get more audience and will promote them. It's a win-win.
You like making videos and streams for people to see, and you want to grow and get better? This is for you
You write stories, make props, make music, make costumes? This is for you.
You want cosmetics for yourself? This is not for you.
Just learn to not be selfish and think with an open mind. And also remember: Live and let live