Making a good post is all about creativity, you download your creativity, experience and wealth of knowledge to the forum in form of contributions to it's activities.
So when you make a post, preview it, read again and you should ask yourself the level of impact that very post would make on the community whether positive, negative or no impact at all. Truth is that some people don't go through such honest self evaluation before posting and it yields little or no impact.
I disagree to say making posts relates to creativity as if you you zero knowledge on the issue is asked for help, and you are trying to make a creative post that is useless and can not help OP or anyone in the discussion. If your creativity misleads OP, readers and relates to fund that can be lost, it's terrible post.
Creativity without knowledge is stupidity. You can't be creative in a setting your ignorant of, so before you can even apply creativity, you must have good knowledge of the base concern and you craft something nice out of existing concerns and bringing it home here, it's the discussion in question.
So creativity and knowledge goes have in hand, after knowledge comes creativity, so I think we're on the same page and there's nothing to disagree with, well unless for the case of someone who's just interested in advertising his stupidity being creative on subject matters he's not conversant with.