Unfortunately this thread has returned to civility, so I brought in some more gasoline:
Just having a chain hook in line with one of the loader arms does not, in itself, solve the loader's twisting tendencies. By example, if you lift a 1000 lbs in line with, say, the left loader arm, BOTH loader arms will each supply 500 lbs to support it. But the right loader arm, being 3 feet or so from the actual load, is also supplying 1500 ft-lbs of torque that needs to be absorbed by the loader frame. That's why they probably design loaders with the cross member near the ends of the arms. Much of that torque from the asymetric load is distributed between the arms thru that cross member and then on to the other end of the loader. People who find comfort in putting a hook at the end of an arm have been blessed with a cross member strong enough to take it. (remember that Kiota thread where Kiota ran the hoses inside the cross member? That hole in the cross member was probably a stess riser and caused a lot of cross member failure.)
But they are right about not wanting an unbalance load outside of either arm. In that case, you have BOTH arms generating torque on the loader frame- one more than the other but both, nonetheless.
John