Untimeliness is, in part, I think a good bit of the reason why I liked the book The Starless Sea by Erin Morgenstern. I won't spoil it for you if you haven't read it, but it plays around with the idea of Zachary being "too late" to a mystical secret world that's already long since fallen into ruin (this is of course a falsehood. Time isn't linear, and nothing ever truly ends).
It's a bit of a divisive book if you look at the Goodreads page for it, but I think if you enjoyed (or wrote) this manifesto you'll likely appreciate the ideas it's meditating on.
Anyways, to be a bit more on topic, this is a very nice manifesto! 8)