This isn't probably what most people think of when they think of "post-left" but the thing in my head I call "post-left" is about allowing the natural diversity of the way people decide to organize themselves to exist and not trying to think of my goals as being about facilitating the creation of anarchy/communism for everyone but more about destroying systems of oppression which prevent this diversity from existing.
I also liked the quote OP linked to about how framing of left-v-right in language fucks up your perspective.