You can read Peter Schjeldhal’s assessment of how graphic novels have “come of age” here. This New Yorker piece is from 2005, the year Eisner died and works such as Harvey Pekar’s The Quitter, Dan Clowes’ Ice Haven, and Guy Delisle’s Pyongyang were published. Schjeldhal begins with Jimmy Corrigan, “the first formal masterpiece” of the medium, then he makes the case for the importance of the kitchen in Maus, and finally, as he takes on more and more creators, he becomes dismissive. Still, the writing is great throughout, especially his energetic first paragraph:
Avant-gardes are always cults of difficulty . . . by which a rising generation exploits its biological advantages, of animal health and superabundant brain cells, to confound the galling wisdom and demoralize the obnoxious sovereignty of age.