I will answer your questions and give you the information you need to get through this, but if you dare say one more disparaging word about my best friend, this will not end well for you.
It is in any case unfair to decide questions by disparaging terms, and to argue as if the whole choice were between materialistic or idealistic monism, leaving realism out of court.
The word "herd" is also applied in a disparaging sense to a company of people, a mob or rabble, as "the vulgar herd."
When considering how to write a resignation letter, keep in mind that you need to stick to the facts and avoid making any types of disparaging remarks about the position or the company you are leaving.
History comes nearer to philosophy; and Aristotle's Constitutions were known to his enemy Timaeus, who attacked him for disparaging the descent of the Locrians of Italy, according to Polybius (xii.), who defended Aristotle.