By the nature of your comment it appears that YOU assumed that.
Do you think there are none who don't?
Do you think there are none who do?
Wrong; I framed my statement to parallel the post to which it was a response.
Do you think there are none who don't [exercise in a God-fearing way their stewardship of the resources God caused to be in their hands]?
Do you think there are none who do?
There are those who do. Do you think there are none who don't?