I think you hit the nail on the head here, but want to add something.
He is a top coordinator by Power 5 standards, so he can definitely help a struggling defense like Ole Miss. Seeing them improve under Golding will have everyone rah rahing over it, but I want to make the point he isn't up to Alabama standards and making us better. You can be CEO or CFO for a $1M company, but that doesn't mean you can be one for Google, JP Morgan, or Home Depot. Golding can make an Ole Miss better, but we know he didn't make Alabama better. That's ok too, because it takes a special coach for that. Just like MANY head coaches won't be Alabama material when Saban leaves, but that doesn't mean they're bad coaches.