Hm. I have a somewhat different view of that.
Once 2 young does escaped me, didn't go far. But they quickly adapted to living in the wild, free, I could have captured them but didn't have the heart to do so. Rabbits are so capable of living their lives without someone who thinks to must care for them. They were around for at least 4 years (I moved away then), had offspring, were rather tame, and simply lived a normal rabbit life, with other rabbits around, with freedom, parasites, and whatnot. I think they had a good life.
That rabbit island, well, they sort their stuff out. I think they live a better life than most pet rabbits that are stored in tiny pet shop hutches. Every single rabbit is going to die (and all of us too), that's not what it's all about, what counts is the life before that. There is no point in projecting our fears on rabbits. Help them? That's not about the rabbits I would say, more about humans.
We have very narrow ideas of how rabbits should be kept, what they should be fed, etc. . That's imho close to disrespecting their abilitys. Sure, some of that rabbits have scars, that's how rabbits sort things out, oh, we dont like to see that, so we preferr to cut off everything that makes them more pleasing to our expectations.
I'm not going to criticize whoever runs that island. I reckon that our viewpoint we have about pet rabbits is, well, rather wierd in some aspects.
Sorry, I feel at a loss of words here, not everything translates easily.