And once you’ve done that—would you agree that, by the “reasonable” standard that you are touting, that most developed countries including the United States are “utopian” in the sense of solving the problem of hunger? If not, why?
I'm sure you meant something more realistic and attainable. But that's not really what anybody means by utopia, because by that standard, much of the world is arguably already living in it compared to the ancients.
We don’t have a vast surplus of food by accident. A vast number of people devoted their lives to improving the global food supply. You can read many peoples accounts of trying to build a better world and pretend they where not aiming for utopia, but only if you also ignore what people mean by the term.
Clearly, we think of utopia as more than just sufficient food, the rule of law etc etc, but just because you are used to a better world does not mean those people achieved nothing.
PS: Consider what the world would be if everyone in history said utopia is unobtainable, so let’s burn the world.
PS: Bringing up straw man arguments is not part of meaningful dialogue.