If you think ethics should be less narrow, why focus only on values? If you think that the only function of ethics is to maximise value, you will be led to the narrow conclusion that consequentialism is the only metaethics. But if you recognise that ethics also has he functions of shaping individual behaviour, enabling coordination, and avoiding conflict , then you can take a broad, multifaceted view of metaethics.
Again, it has not been proven that ethics is just about value.
If you think ethics should be less narrow, why focus only on values? If you think that the only function of ethics is to maximise value, you will be led to the narrow conclusion that consequentialism is the only metaethics. But if you recognise that ethics also has he functions of shaping individual behaviour, enabling coordination, and avoiding conflict , then you can take a broad, multifaceted view of metaethics.