No. They wanted to count them as human chattel to increase their own power. What slaveowner or tyrant in history didn't measure his worth and power based on how many people he had under his thumb.
This early, baby-step by the South to recognize slaves as full human beings was scuttled by northern economic and political interests. Had that concept been allowed to enter the political landscape at the nation's founding the course of history could possibly have been changed for the good.
No, that would have made slavery an unassailable, unchallengeable part of the national heritage. Something you would undoubtedly like.
What rock did you crawl out from under and why don't you go back there?
“What rock did you crawl out from under and why don’t you go back there?”
Well, that is not very nice!
Words like that must have been written in jest.