They have neither the ability, nor the desire to "argue intelligently". Reason, logic, and facts are wasted on them, because everything is driven by the evocation of emotion. What makes you angry, what makes you sad, what makes you happy, but never, ever what makes you THINK. Actions are meaningless, only intentions matter.
It's all about feelings with these people. Critical thinking is a skill that requires the use of an organ that has been allowed to atrophy. All their lives they've been shielded from conflict, from criticism, and from anything and everything that might threaten the blissful pocket utopia created for them by overanxious, coddling parents. The line between speech and violence was blurred for their protection, and now they cannot see a distinction between the two. All their decisions, opinions, philosophies, and ideologies come from their heart, because their brain was a tool they were never taught how to properly use.
They can only speak the language of raw emotion, and if you mean to communicate with them at all, then that's the language you must use.