The impression I got is more that Slytherin adepts believe that human ideals such as justice, fairness, equality, and talent distort reality because they rely on the assumption that humans hold a special place in the universe which Slytherin adepts believe not to be true.
Yes to both this and the grandparent—though in principle, a Slytherin might try to produce an environment where those ideals make sense, out of personal preference.
The impression I got is more that Slytherin adepts believe that human ideals such as justice, fairness, equality, and talent distort reality because they rely on the assumption that humans hold a special place in the universe which Slytherin adepts believe not to be true.
Yes to both this and the grandparent—though in principle, a Slytherin might try to produce an environment where those ideals make sense, out of personal preference.