"Imagine if the words were reversed. "
If you actually understood what the show is doing -- something that is admittedly hard when you have not seen it -- you would never say that. I will try to explain.
People are not going to see Hamilton because of its multi-ethnic casting, but because the show is telling its story specifically with that casting. It is asking us to rethink American history through the prism of the American mosaic of the 21st Century, rather than as a bunch of white dudes prancing around in powdered wigs. And in doing so, it opens our eyes to our own world, and the meaning of our history.
The analogy would be if someone wrote a penetrating show about American slaves and cast whites as those slaves. I can't imagine any uproar that would ensue, other than a positive one.
"By the way, seeing On Your Feet next week via Today Tix . Nowhere near the hype of Hamilton and we will probably enjoy it more."
Well, although as you say, you will probably never know, if you prefer vapid jukebox musicals to intelligent theatre, then yes I suppose you will have a better time there. There are people who would rather sit home and watch mind-deadening sit-coms on TV than attend ANY theatre too. The choice is yours.