I utterly despise this argument. It's a bad poem, but at least they are talking about POETRY, which is so marginalized that we should be desperate for any crumbs of attention, presumably.
What if we took that attitude toward music? A musician as bad a musician as she is a bad poet would be sent back to woodshed some more.
Why is the praise for bad poetry good for poetry? It is because poetry has the lowest barrier for entrance, everyone is a poet. So identity politics can be all you care about any more. That is the sum total of the art form. Imagine if a white man wrote a poem like that, with those kinds of doggerel techniques. Then is would be seen as a prime instance of white male mediocrity.
So praise of bad poetry is an instance of contempt for poetry, not of defense for it.