I think it's safe to say that most likely none of them would have survived until their first winter cycle.
Since spring of 2008 I've accounted for dozens of adults in my community and not a single one had any physical issues.
Even in Henry Gray's case he was the second one I had seen between spring 2008 and spring 2016. They were both in the spring of 2016.
The first one had a similar leg deformation but so slight that it didn't impede it's movement in any way and it had all the energy and agility and enthusiasm of the best among them so I didn't want to domesticate it as that was never my intention. Then a couple weeks later Henry crawled out of the water and his leg actually kept him from jumping any distance as it would stick when he jumped and yank him back forcefully to where he was trying to launch from. He'd have been bird food in the firat couple minutes if he lasted that long. Unfortunately as it ended up he became an owl snack a little over 2 years later. But he had a great 2+ years and he started me out so I was ready when the population exploded and a few more exceptional individuals crawled out of the nurseries. I'll remain ever grateful to him for his initiating me into Gray Tree Frog adoption and long-term care.