I think utopianism and eschatology are really two sides of the same coin. They both assume that some massively transformative event is going to happen that's going to completely change the nature of society. They only disagree on whether we get a happy ending or all die horribly. And so utopianism is on the wane right now because at the moment most of the plausible candidates for huge historical transformation look like they're going to kill us.
