A case for Nas, hip-hop
's finest MC is the headline. Whole article is about hip-hop.
Even the paragraph you quoted:
Those words were carefully chosen: "lyricist" over "rapper" or "hip-hop artist;" "greatest" instead of "most successful;" "all time" rather than "today."
Those are all referring to the genre of hip-hop and rap, terminology-wise. I don't think they were saying Nas writes better lyrics than John Lennon and Bob Dylan. The context you took it in is completely wrong, but at the same time, the context he used in his actual article is pretty inaccurate too.