"Thus Sloterdijk shows that being-in for humans means living in bubbles, in a world that looks like foam — marvellously refreshing metaphors for facilitating a new way of imagining sociality."

The best I can do with that is interpret it as "to be worlded" can be compared to bubbles and/or foam. I suppose that goes along with "rendering the material aspects of being human visible."

Yet "world" is as much invisible (in the sense of having its own meaning) as visible, it seems to me. Since so much of the article reduces females to their biology, I guess I should not be surprised that MH gets reduced as well.