According to some ideologies, any person who takes a position on an issue of ethics is merely expressing emotions or subjective preferences.
Of course, there's a question that an ideology must answer before that is completely meaningful: what kinds of issues are issues of ethics and what kinds of positions are positions on issues of ethics? In other words, what are the boundaries of the realm of ethics?
However, we don't need an immediate answer to that question. In the meantime, we can consider the following scenario.
Suppose that on some occasion there are 10 competitors in some competitive game or sport. Suppose that each competitor has his or her own coach. Suppose there is a tactic ("tactic U") that all competitors begin using and suppose that all coaches agree that it is unethical. Suppose there is a different tactic ("tactic I") that all competitors begin using in addition to tactic U and suppose that all coaches agree that tactic I is ineffective for any player who uses it.
Suppose that:
Every player receives clear notice from his or her coach that the coach
disapproves of the use of tactic I.
Also, suppose that:
1. there is at least one player who clear receives notice from his or her coach that the coach
approves of the use of tactic U; and
2. there is at least one player who receives clear notice from his or her coach that the coach
disapproves of the use of tactic U; and
3. there is at least one player who receives clear notice from his or her coach that the coach
doesn't care whether or not the player uses tactic U.
Then does it make sense to claim that anyone who takes a position on a question of ethics is merely expressing an emotion? Perhaps, if this train of thought is pursued further, it could help explain why many people have adopted the practice of using the word "stupid" and similar words as though they
meant not merely a lack of intellectual capacity, but a reprehensible (either deliberate or negligent) wrongdoing.
Note: the above was an attempt to more clearly express what I already tried to express in the second part of the following
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