"By traditional definitions, conservatism stands for intellectual humility, a belief in steady, incremental change, a preference for reform rather than revolution, a respect for hierarchy, precedence, balance and order, and a tone of voice that is prudent, measured and responsible. Conservatives of this disposition can be dull, but they know how to nurture and run institutions.
What David Brooks truly means is that his idyll of "conservatism" is the type of fellow who lets himself be properly steamrolled by his more intellectual and Progressive social betters, thus presiding quietly, and in passive resignation over the destruction of every belief and institution he pretends to hold dear. "Steady, incremental change" = the Socialist ratchet, as Margaret Thatcher astutely noted.
Conservatives who won't fight for what they believe, even in the face of a destructive and malignant ideology aren't worth spit.