it is mistaken to speak of the failure of
Does the following sentence want to say "it is wrong to say that avantgarde did not succeed in destroying the institutional mechanisms of art, because neo-avant-garde (the new form of avangarde) is still seeking to deconstruct the boundaries of the institutional mechanisms of art (the fight in still going on) and it has been more or less successful too"?
Sentence:
Hal Foster suggests that it is mistaken to speak of the failure of the avantgarde to destroy the institutional mechanisms of art, seeing the neo-avant-garde as, more realistically and more successfully, seeking to deconstruct its boundaries.