EXACTLY CORRECT!
I do not have any of these yet, but will get some for my equipment trailer this coming Spring.
If I had D-Rings absolutely everywhere, I would not need these.
Seems like I always want a chain or strap, where there is no D-Ring.
Putting a strap through a stake pocket, or around a rub rail, is a quick way to chafe a strap.
Hooking a strap to a D-Ring is foolproof.
D-Rings in stake pockets just means that you have more D-Rings.
In the grand scheme of D-Rings,.....More, is better!
BTW: A company called MyTee Products sells these stake pocket D-Rings (16,200#,/5400# working load) for $10.99 each, plus shipping. MyTee also sells a package of 4 on E-Bay for $53.99, with free shipping. Others may sell heavier duty ones, but my chains, and straps are all 5400#.