It is wrong to say...

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 its boundaries (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.