i can't say i follow this reading. conceptually dismantling the state doesn't put "anti-statists" out in the cold - rather it makes the "archists" all the more absurd
i found graber's writing to remain quite compatible with modern anarchist theory, which has not stood still since the 19th century, but has synthesized nihilism and anthropology with those historical traditions of communal libertarianism and insurrection.
and then the article mentions the corbyn thing and then just kind of... ends? i expected more.
the labour association was certainly disappointing for many folks but only a purist would believe it immediately implies some kind of fundamental conversion. and historically it is not unusual for anarchists to have some encounter with "politics" especially for some tactical reason.
he also supported the ypg, which is an armed organization dedicated to establishing a "monopoly on violence" over significant territory in their three-front war against turkey, isis, and the syrian arab army. certainly not quite comparable to an opposition party that isn't making policy or commanding british soldiers, but i've never seen anyone count the ypg against him as an anarchist, by reference to the dictionary.