I came here thinking that "they again mistake game designers for game creators". And found out that this is actually by a main programmer of the game - I was pleasantly surprised.

From my experience programmers influence the way a product looks like, they are not merely "engine creators". They have too kill some "features", create new ones that designers didn't think of.

Programming is not a simple assembly line, where designers create the whole product and workers do it as they are told.