Listen, Merriam-Webster: You descriptivists do good work. It’s important we have maps of the lay of our linguistic land as it lies. But don’t purport to explain to the world that prescriptivists are only interested in “‘correctness’ set forth in ‘rules’ that [we] imagine.” Just like poorly developed roads, a poorly designed language (as I concede every language is to some degree) sometimes leads to confusion, frustration, and hazards. To suggest prescriptivists are always wrong to do what they do is the equivalent of saying city planners are always wrong to do what they do.
Misdevelopment of the land has consequences. So it is with lexicons—especially when the words in question are of moral value. Consider “forgive.” If “forgive” is “actually used,” as you write, “by writers and speakers of the English language,” to include by definition reconciliation, forgetting, and anger abatement, which in some circles, although thankfully not quite in your dictionary, resentment being different from anger, it does, then descriptivism can be guilty of abetting the deformation of our moral vocabularies and thus the persistence of harm, including domestic abuse and white supremacy, because despite your protestation, people look to your publications as a guide.
We need people alerting us to semantic hazards and dead ends.