But put Storm up on the big screen and have her portrayed by a nordic, Blonde haired blue eyed heterosexual Conservative woman and suddenly it would "matter".

Yep, but it's not just SJWs. A lot of normies and Centrists take on this view as well, that it's fine to race-swap white characters but then they defend to the death why characters like Mulan need to be Chinese.

I actually took some of them to task over this, and even demonstrated how -- without even changing Mulan's character arc -- she could be white and still maintain a story about Chinese culture. As is typical of Centrists/Leftists, they just slyly acquiesced and then pushed the goal posts elsewhere.