De-extinction doesn't necessarily mean they will release animals back into the wild. Presumably a portion of animal behaviour is learned and passed down from the previous generation. Animals produced by de-extinction will be lacking these behaviours and perhaps best off in captivity.
yes, this is something most ppl get wrong.
It's too bad it would be highly unethical to run experiments with humans in tabula rasa environments. It would be really neat to see what different social behaviors emerge.
If they raise them in an environment where they have to hunt/forage for food, I don't see it being a big problem. You'd want to establish a population in a sanctuary for several generations before attempting it of course. Dogs and cats both can become feral pretty easily, and these occupied a similar niche despite being so distantly related.
This is different since they were exterminated by humans, not by natural processes. It could be argued we have the moral obligation to bring them back if able.