The reader is NO PART of the poem, and should be of little or no interest to the poet while he is composing it. A poet, at least one with personal integrity, cares about honestly (and artfully) expressing his ideas. To subject his ideas to the filter of what the (possible eventual) readership might think, is to pervert (or at least dilute) the ideas.When one is composing a poem, there is obviously an audience, even if it's an audience of one (the poet himself). You may not think the poet is part of the audience; you haven't substantiated that opinion. If the poet isn't even going to read his own work, then who is he writing for?
If the poem is written to be read, then the poem has an audience in mind, even if that audience is vaguely defined.
If the poet goes into a poem thinking there is no audience, there is little reason for him to think about the craft involved in writing. Who else is the craft for? It's not for the poet himself, as
he already knows what he means. If the poet is merely writing to write, there is no need to use tropes or imagery, no reason to submit his writing to the rigors of figurative language, no need to grope for just that right word.
So, if there is craft involved, there is probably the assumption that the piece will be read by more than the author himself. That implies an audience.
To say that the audience should not be thought of gives ammunition to all those "poets" who claim that the reader "just didn't get" what they were writing. Odds are, their writing was unclear to anyone who couldn't read their minds. Poetry is not a mind-reading exercise.
The reader can't know what the author's intentions were. The only way the reader has any idea of what the author is talking about is through the author's word choice and manipulations with language. And, again, if there is no conception of an audience, there is no need for an author to think very deeply about word choice or language manipulation.
I'm not saying the author should pander to the audience. Just that the author probably assumes that there will be a wider readership than just him alone. Don't confuse or collude these two very distinct ideas.
(Read the whole [?] discussion
here. [In truth, the originator of the thread can't usually seem to get his replies in the correct threads, so he replies in a brand-new post. The conversation has been going on since last Friday.])