"One major argument against objectivism in ethics is that people disagree deeply about right and wrong, and this disagreement extends to philosophers who cannot be accused of being ignorant or confused."
Philosophers are rather typically ignorant and confused. With access
to, and free time to examine, all the treasures of life and thought,
they come forth with little more than the trivially true, the obviously
false, and the totally incomprehensible, and dress the stinking pile of
garbage up as profound wisdom emanating from great thinkers.