Nerf used this way is more in analogy to the toy guns (Nerf as a trade name, they launch foam projectiles, there even exist hobbyists who will upgrade them to be more energetic/destructive), it means to make the system ineffectual in some way that blunts a powerful feature, often with the stated goal of protecting the user.
Thank you. That explains this nerf. But I don't see how that applies to the comment. Do you? It may be the nerf reply was meant for someone else or some other post.
