Generally, in my experience, an individual who says, "DevOps is a culture, not a title", does not know what DevOps is. It can be both, and exclusive, at the same time.
The analogy with agile is pretty good here. Sure you could have an Agile Engineer, that works primarily with making sure the agile process is actually used and help facilitating that. Normally that would not be a position itself though, especially not an engineering one.
Never had someone tell me I dont understand my own conclusion to my own article before. Thats a first.