As far as I can tell, “deconstruction” is a word that simply means “academic trolling,” at least when it is performed by the man who coined it—Jacques Derrida.
This can clearly be seen in his deconstruction of speech act theorist J. L. Austin, which Jonathan Culler provides an account of in On Deconstruction.
Austin was arguing, against his predecessors, that language is not simply about making descriptive statements. He pointed out that fitting language into that straightjacket meant treating as exceptional what in fact was characteristic of huge amounts of discourse. As an alternative, he proposed the idea of language as including both constative statements, those which are true or false, and performative statements, those which have some consequence within the social reality in which they are stated. The canonical case of the latter would be the making of a promise.