WTF is "marxist anarchy"? Marxism is centralized governmental control of everything. Anarchy is complete chaos and lack of governmental controls. This sentence basically says "It is a leftist philosophy rooted in leftist rightism and political rightism."
Nihilism . n
A diffuse, revolutionary movement of mid 19th-century Russia that scorned authority and tradition and believed in reason, materialism, and radical change in society and government through terrorism and assassination. i.e. chaos, aka anarchy e.g. extreme rightism.
Again, WTF does this mean?
A guess. It seems some Anarchists believe Utopia will naturally come about when all governments are eliminated. Anarchy is just the means, with the same ends as Marxism.