now you’re just being mean and exposing the limits to your understanding of a good gumbo. The thickening really comes from the roux. Every gumbo begins with oil and flour cook slowly till it browns golden. To make it correctly one should have two nice cool drinks in the process of finishing the roux. Chef Prudom used to refer to it as a two Beer roux. True the okra helps thicken it up a little more, but the roux is where it begins. And the thickening doesn’t end until you add the ground sassafras root AKA File powder until you can almost stand a spoon in the bowl as per Leah Chase of Dookie Chase. But the okra gives it the color, the thickness, and natural sweetness, that helps balance the chili powder, Cajun powder, capricious use of hot sauce.