You look pretty silly making a claim like that about "most philosophers and ethicists" and then posting nothing but radical Calvinist apologetic to back it up.
How is that relevant to the content. All your doing is making an ad hominem logical fallacy.
I can see why you like this guy; he argues just like you do, by telling his opponents what their position must be.
But is he wrong and if so how. But once again another logical fallacy. All you are doing is attacking the person and not addressing the content. So let's just look at the content. How is it that there are many mainstream articles that say exactly the same thing as these so-called non-credible people who have authored these articles.
The article you claim comes from a radical Calvinist happens to quote Sam Harris a prominent mainstream atheist who seems to agree with him.
How have we convinced ourselves that in the moral sphere there is no such thing as moral expertise, or moral talent, or moral genius even? How have we convinced ourselves that every opinion has to count? How have we convinced ourselves that every culture has a point of view on these subjects worth considering?— Sam Harris
How is what these articles are saying any different to what most mainstream philosophers and ethicists are saying in that as relativists it makes no sense to criticize other cultures and as subjectivists, it makes no sense to claim others are morally wrong. That both people who claim these positions are being hypocrites.
You can tell when people cannot deal with the truth is when they attack the source rather than the content.
That's because our moral sense is not solely the result of individual conscious thought. It's not something each person figures out for himself each time he confronts a moral dilemma.
You still haven't accounted for why it is morally wrong. How personal views, beliefs, socialization, "likes and dislikes" can be equated with moral right and wrong. Even if you say it is passed down and learned as a norm it still doesn't equate to moral right and wrong values and duties or explain why an act is right or wrong. There is no independent and objective measure to determine what is up and what is down.
For example, different cultures have different views on right and wrong. Some African tribes may mutilate women through circumcision. Eskimos may leave a newborn out to die because they know there is not enough food for the rest of the group to survive the winter. Under a relativist's position just like subjectivists one, these moral acts passed down through acculturation cannot be regarded as morally wrong. Nor is there any measure to determine any moral values.
So, in reality, none of this equates to moral right and wrong it is all dictated by humans and is different to whatever individuals or groups of humans are influenced by. It could change at any time due to personal influences or survival needs and we as a western nation may be doing something we thought immoral due to changing circumstances in near future.
But the problem is we know this is not how morality works. We do protest that certain things are wrong despite cultural and individual differences and personal views. We do say that it is wrong for Eskimos to leave a child to die and for African women to be circumcised. We condemn it and contradict our own moral position. That just shows that there is something at work beyond us, outside us that works against relativity and subjectivity and shows how these positions cannot work in the real world.
All you are doing is trying to find some meaning to attach to morality but there is none because anything that originates from humans be it, individual or group present or passed down still has no independent measure of right and wrong. Any action can be justified as OK.