People that are going crazy about this, I agree, they should be, but where were they when story book theatre decided to mount an "in the heights" with very few latinix - i mean they cast lead roles with very talented people - yet they are not latinx. Where is the outrage for that? They also cast a lot of white ladies/men on the latin roles - I heard nothing - is this okay to white wash the latinx? Should I or someone else write an angry letter to storybook to stop it maybe the author of this article should write about it too? Would anyone do a hairspray or porgy and bess like that? If people are going to be upset about one show they should be upset about them all who do stuff like this. 
Also, as a minority myself, white people should stop being "upset" about stuff like this and let us fight our own battles. If you are so called allies then empower the minority to speak up - you are doing as much harm as fighting a "battle" it is not yours.