A problem of we, you and I in a poem

I think what you have in the instance of your poem and the other you mention is not a lazy writer by any stretch, but a lazy reader.  It is bleeding obvious that there's a conversation going on, just as there is in Shakespeare's sonnets -- did anyone tell the Bard not to be so general?  Sorry but it just doesn't seem so tricky to me. 

And I'm afraid I very, very strongly disagree that the use of "you" is in any way preachy.  That there is preachy poetry out there which utilises the "you" is undeniable, but it is not the address which makes it so, it is the tone, and the refusal to include the poetic voice in those accused.  This is assuredly not the case when Pags writes.  So there.