However, I will note that such publications as Poetry almost never publish our ilk, i.e. the spec-po crowd (so many to whom I've spoken have just stopped trying to submit to mainstream literary venues altogether, and that's largely been true of me for the past few years, too) and that is the thing about mainstream poetry culture that makes me cross.

No dispute: I see poems all the time in mainstream markets that could have been comfortably published in speculative ones, but I don't know a lot of poets who cross over (either way) and I would like there to be more. I still send work to Poetry, just in case.