On these two things, the whining about the irrelevant popular vote is disappointing but not terribly surprising. I'm pretty low expectations on DJT and unfortunately, that behavior lives down to them.
What little I know about Bannon (which isn't much; feel free to highlight something specific and I'll be glad to comment) doesn't bother me. I don't know enough about him to think this is world war XI, and to be completely honest, if I had to stop my day and investigate every time a left-leaning person cries raciosm, I'd never get anything done. I like the car alarm analogy for the left's cries of raciosm: when was the last time you heard a car alarm go off and actually though a car was being stolen? I'm not sure I've met a conservative in my life who hasn't been called a racist. That knife is a dull. If this guy actually is a racist, I'll be happy to consider the evidence thereof, but I stopped listening to the incessant accusations on that front from the left years ago. That smear is too often deployed (ironically enough) indiscriminately against conservatives to have any value at this point to me.
To answer your hypothetical, if President Obama appointed Rev. Wright as his closest confidant, I'm sure it would bother me. That's because there's a videotape of Rev. Wright invoking his Creator's ability to damn the country. If he appointed Al Sharpton, I would also be concerned because there isn't much about Al Sharpton that is left to the imagination. The man has made a lucrative career out of dividing people and inflaming passions. I don't know that Bannon is anywhere close to that standard, but again, post something objective and I'll be glad to consider it.