That it! Except '97 up didn't just have that piece of angle but it had a long "tail" extending backwards, with another hole right at the end.
It's more substantial than any tie-down I've seen (which tend to be pressings), there's only the one & it lines up with the cut-outs in the valence as if for attaching a tow rope.
I've certainly used mine for towing/being towed & once for a fairly light recovery, when I'd managed to get it grounded on the back axle, with one front wheel pawing the air. More of a tow on rough ground really.
Surely, at the end-of-the-day, it's as strong as the bolts & where they bolt through - & that's exactly the same as the hooks. Maybe I should find some HT bolts?