Questions being raised from Barthes

In The Pleasure of the Text, Barthes talks about how art is "compromised" due to the artists' efforts to destroy it. The destruction is inadequate, according to Barthes.

Question #1: Why does the artist do this?

Here's a statement (written by me, quoting Barthes) that needs major clarification:

"He concludes that 'there is a structural agreement between the contesting and the contested forms,' apart from a dialectic relationship between the art and its destruction for the production of a synthesis. Instead, there results the production of 'a third term, which is not, however, a synthesizing term but an eccentric, extraordinary term.'" (all Barthes quotes from p. 55)

Question #2: Does the inadequate destruction of the art always result in the production of an extraordinary term?

Question #3: So what are the effects of this extraordinary term? How does this affect the art and its consumption or expression?

Question #4: What if the artist inadvertently destroy their art, as might be the case with a figure like Feist?

Question #5: Is it possible to apply Barthes' thoughts about texts to other arts and their participants?