This person's works also include Burn the Bread Book, an anti-Anarcho-Communist screed in which they advocate for the end of civilization, and return to each person producing all their own food, an idea that is openly ecofascist and would kill billions, first and foremost a large number of disabled and chronically ill people.
I think you should carefully consider where your ideas are coming from.
You don't think perhaps it was the word "utopian," a word which in the discussion of various different socialist tendencies generally refers to the Utopian Socialists, a group that Marx vocally criticized?