I am not saying the writer doesn't know his meaning, but that he often has not the skill and craft to show it. We will never master all the facts to measure meaning against. We settle for probable meaning. On the LWW we settle for a wider definition of the probable. As the reader critiques, the reader renovates.
Renovations change to a degree intended meanings.
And this is for the good. But there are dangers. What are the limits of permissible reading for meaning. The poem gives the reader a chance to tell these ruminations, often at the expense of the very work he says he is critiquing. In these instances, a critique is a masked production of the reader's own work an opportunity to be clever, funny, erudite, historical, literary.