You contradict yourself. Why is it good to say the antifeds were right when you disagree with them? Makes no sense. It’s because you’re trying to square the circle.
A person or group can be right about some things, and wrong about others. A person or group can see disaster looming, but be wrong in some respects as to the complete nature and extent of the disaster.
So ... the antifeds were correct that the proposed Constitution was a disaster waiting to happen. I argue that it was worse than they thought. Not a hard concept to follow, and requires no squaring of circles. In fact, in your efforts to find Constitutional authority for acts of government which completely lack such, you appear to me to be trying to square the circle.