There are no bad posts, only bad curation.™
I don't think it is that simple but I think this is 90% correct.
I do think what you are saying would be a more elegant approach. I am mostly worried it would not work exactly as we hope and create issues we do not expect.
That being said, this would get whale fights away from authors that "don't deserve it" which I think would be a good idea.
This would be a good way for manual curators who do not like auto voting to just focus on the autovotes versus downvoting the whole account.