Macklemore isn't as bad as the likes of Iggy and Riff Raff, but they are all in the same boat really. He hasn't appropriated black culture as much as others, but he has reaped the benefits of a white supremacist industry. He has had more success than black rappers that debuted around the time he did but yet his music is very mediocre and his skills as a rapper are sub-par. At the end of the day, he isn't one to talk about stealing a culture when he's also done that whilst simultaneously being involved in the erasure of a culture.
And he is gonna get WHOOPED by old white people for dropping Elvis' name there