Bob....I am so disappoint.
For oh so, so many reasons.
1) White people didn't invent slavery, and if you travel back far enough, you'll find a lot of Caucasians were slaves to some other race or another at some point in history too, along with any other race you can think of, for fucks sake, some African tribes actively enslaved other weaker tribes before we even landed there.
You seem to think that dwelling on what our ANCESTORS did is a good idea. Self deprecation is never a good idea, let alone for something none of us hold any kind of responsibility for. Colour me confused, but I'm not going to be tried for any crimes my long dead relatives committed and that's kinda what you're suggesting.
The only way we're going to be able to move past racism is by simply not acknowledging it. We certainly aren't going to manage it by dwelling on what happened in the past.
2) You didn't even glance over the reason that this shitstorm kicked up. It's got nothing to do with racism. When Duncan was cast as the kingpin way back in the old daredevil movie, no one made a fuss. In-fact, people were more bothered about the casting choice of DD himself. I thought he was a cool change.
Or when Samuel Jackson was cast as Fury... I don't think anyone so much as muttered a word of disapproval. I certainly didn't. He added some much needed cool to an otherwise bland character.
Do you know why no one made a stink about that? Because both Nick Fury and the Kingpins race, was never, ever, ever, ever, ever an integral part of their character.
The NORSE gods are exactly that, fucking Norse. They're the depiction of the archetypal European.
Personally, I'm not going to let that bother me when I watch the film. It's not like it's an accurate depiction of Norse mythology as it is. But I just think it's pretty low of you to bring this topic up and completely gloss over the nuts and bolts of the issue.
It's not that it's a blackman playing a role that had otherwise been for a white person. It's that he is portraying a European god. Something that is representative of a certain timeline and people. And it is a miscast by that criteria.
3) Fucking Pony's... ideal fucking world..... GTFO!