Im not saying they are not valid recovery points nor has ford not tested them. But if I have a 3/4” shackle made by crosby i have a chart on my phone that will tell me exactly what it is rated for at what angle. And its not going to slip off the hook (has happened to me). Been involved in too...
I do heavy rigging for work. A properly sized shackle with the correct sized strap derates a lot less than a hook. Plus there is actual data available for a 3/4” or 7/8” shackle. Never seen data for the factory hooks. And shacles are sized by the bow diameter not the pin.