I disagree.

I agree with your disagreement.

I agree with your two disagreements, but also disagree with your agreement to disagree. 

You see, it is possible for steering, and drivelines, to bind given enough droop, however, it would be almost impossable to get a leaf sprung vehicle to flex like that.  Impossable no, unlikley yes.

And with a linked suspension it is the same idea except you also have the links and hiems that can bind.  But that is why when we build a suspension of any type we build it so nothing binds, so the answer is yes and no