Robin Hood is a fictional character and the story is fictional... So I have no problem with the character’s being any ethnicity that the recreator of this story chooses.
What I do have a problem with is making people from recorded history different ethnicities than they actually were... That is completely ridiculous.
Here’s a good example.
https://www.smithsonianmag.com/smart-news/who-was-first-woman-color-bring-anne-boleyns-story-screen-180977882/
Why the controversy?
Because. She. Wasn’t. Black.
Yeah, but I still have negro fatigue.