2018 and people still don't get how turning a white character black is good because it adds representation but turning a black character white is bad because it takes away representation.
context is everything. not everything is a double standard. sometimes one way is fine but the other way isn't. that's just how it goes.
This excuse (which is all it is) would work alot better if black people weren't already over represented in media. If you were actually interested in being fair, you'd be promoting a Hispanic or Asian lead. Since they actually are underrepresented.