A painting, music or well taken photograph does not mean to be consists of words. They are mean to be complementary of collection of words and wordless expression. Even 1000 words of ramble does not mean it is a GOOD content. For those, who are not native writer of English, that is another case of barrier.
The whole thing is subjective, not objective. The MB can judge a work to be abusive and contact users for explanations. If user can convince the merit of the work does not require certain amount of words (e.g. 150 words), it should be compliant enough.
I just wrote a lengthy rant on the subject of content quality definition. :)