I respect your opinion. But you must see that in time all off this will probably change natural.

Personally I've never heard zwarte piet with a stupid voice. At least that's not how we played him.
We use the black skin, golden earrings en big red lips as a disguise so our children would not recognize us.

So things already changed and every year they will continue changing. But please there are more important stuff in the world right now.
Give it time and especially give our people and children time...