Well, I'm not really good at Chomsky's works, yet he seems to be always mentioned in Bakunin's line. And according to Bakunin, "socialist state" is not a "true socialism" by the definition.
For Bakunin and others, there's no much difference between "capitalism" and "state socialism", because workers' rights are to be violated anyway either by capitalist owner, or by state "socialist" manager (and this is why "state capitalism" term is born - it rather means "any state system is about exploitation of workers anyway"). So any deficiency in Soviet Union's implementation of socialism is only to prove once more anarchist idea, not to influence it.
The only possible (anarchist) solution to protect freedom and workers' rights is to make self-governing worker collectives. Which is actually the end of (any) modern state and written law. This is what the anarchism is about.
This is an excerpt from Chomsky's speech taken from wiki page on Chomsky's political positions:
... a kind of voluntary socialism, that is, as libertarian socialist or anarcho-syndicalist or communist anarchist, in the tradition of, say, Bakunin and Kropotkin and others. They had in mind a highly organized form of society, but a society that was organized on the basis of organic units, organic communities. And generally, they meant by that the workplace and the neighborhood, and from those two basic units there could derive through federal arrangements a highly integrated kind of social organization which might be national or even international in scope. And these decisions could be made over a substantial range, but by delegates who are always part of the organic community from which they come, to which they return, and in which, in fact, they live.
This is what is called "Social anarchism", which clearly opposes any state ideology be it capitalist or socialist one.