This is not a duplicate of How should I flag questions trying to get around the “This post is mostly code” filter? because my flag was declined, meaning that the answers there are irrelevant to my question.
This question contains at the end:
It looks like your post is mostly code; please add some more details. It looks like your post is mostly code; please add some more details. It looks like your post is mostly code; please add some more details. It looks like your post is mostly code; please add some more details.
This is obvious filler, so I raised a custom moderator flag. That got declined, so I raised another fully explaining the situation, and that got declined too:
Does this mean that filler is allowed? If so, this effectively makes the filter useless.