Fishraptor
There is NO way BCB would state that the Skeg could be bent back (if done properly) if there was a chance of failure. The liability of that statement is big. Its because they KNOW and have more experience than anyone else on this site with that process.
I have straightened out a couple and many others have. A bent Skeg is nothing new in Boating industry and doesn't require a LU replacement every time it happens.
What you don't show in this thread is the big chunk that was missing from the front of the Skeg (Merc forum). That repair would be my concern.
Bending the skeg isn't the issue, its the chunk missing from forward impact. It creates fatigue points in the aluminium.
As Don mentioned, I would replace the LU due to that repair.