My guess would be a combination of cheaper import steel, over HP for the implement, and hitting some solid relatively roots. The metal is mow fatigued at both bends. Straighten it! Reinforce it! (You have 2 suggestions) I suggested do both if you plan to continue to use it.
Go behind the cross brace that comes around to form the bend portion and go out to create a slide in out pin holding frame.
Then from the current outside edge of the ear (after straightened) go from there to under the bottom of the cross brace.
Doing both will create a very strong pin joint (assuming you can weld these new pieces in solid).
Good luck on your repair!