You are very right, although generally it is better to expand on something like QFT rather than just write that and nothing else
Why? The whole point of QFT is that you agree 100% with post and could not say it better. Therefore you quote it so that post is brought to the forefront of the consversation.
It makes no sense to say I completely agree with you and well just to fill in some words I'm going to put on some extra rubbish.