Before a handful of (white) internet commenters wild on me saying “Sasha Frere-Jones is not a racist,” let me clarify that I’m not saying he’s consciously and intentionally trying to assert his superiority. I’m just trying to point out that his language is typical of that (white) journalistic voice which presupposes the (white) journalist’s authority.
Perhaps it’s first worth examining further why “periodization” is such a “dicey proposition” to begin with, regardless of how early or late. Concepts like “periods” and even “genre” are loose collections of tropes that have no inherent meaning but rather contextual meanings that are only useful to the extent to which they can help organize texts. The point at which they actually serve to define texts is when they can enter a lens of scrutiny so intense as to render them meaningless.