Well now you are backpeddling and changing your argument while looking for more truth in a FICTIONAL TALL TALE. They are literally called Tall Tales, there is never a mistake about it. Go back to defend your original point. You said he was shooting Native Americans, your phrasing was also more violent by saying shoot'em up and it was a game. The song uses the phrase game as a turn of phrase. Like when someone says "beat them at their own game." If you don't get that, it is fine, but that is the point. If you really saw it as a genocide, you would have said that first. Changing points to try and keep an argument going.
You literally switched arguments and it is all quoted here.
Both arguments lead to: racist.