I've forgotten what it was, but I know there was a word used creatively in the 19th or early 20th century to describe in a mocking way the wishful thinking, and wildly optimistic expansive progressive vision.
"Aspirational" or "utopian" seem similar but don't pack the same mocking punch. There's sort of a transcendent character to it, the feeling that they can will a better future into being simply by wishing hard enough.
It highlights the vague or amorphous means by which the optimistic outcome will be achieved.