You realise DLC was originally referred to an expansion that was released a while after a game's initial release. But now game developers are pulling half the features from a game, with those features being put in a DLC instead.
So the original comment labeling the practice of a feature being pulled from the original product and put into a separate product is apt and valid.
You get that analogies exist right?
The original commenter used the term "DLC" to paint a pretty precise mental picture. And you got hung up on the semantics.