That's what you're saying: "If your barbecue needs sauce, you’re doing it wrong. It should be bursting with moisture and be able to be cut with a spoon"

What this is implying is that Carolina BBQ, which necessitates sauce as otherwise it wouldn't be Carolina, is cooked poorly. What I'm saying is that good bbq is moist and cuttable with a spoon regardless of where it's from. That has no bearing on whether it "needs sauce". Sauce is meant to enhance the food. Who cares if it "needs it" to taste good? Do good fries need dipping sauce? No. Are good fries made better with some kind of dipping sauce? Unquestionably so.

I'm not going to dox myself to give examples of where this style of sauce is popular. I guess you'll have to take my word for it that they exist and aren't near either Carolina.

Texas is the second largest US state with insane amounts of cultural capital. It's going to be famous by nature of that regardless of whether it's better than what it's compared to.

YouTube videos are edited nonsense. I don't think this strengthens your point.