I don't understand why you wouldn't propagate healthy species into an area. My thing is that humans probably kill way more snakes (willingly or inadvertently) than probably any specific affliction in the wild. I really don't think of it as playing god. I think of it as replenishing the losses of others playing god.

However, I am not saying that captive reptiles make the best genetic stock for reintroduction. I think that ensuring that two wild caught specimens produce adequate stock for reintroduction is fine. I mean catch, breed, release. I mean releasing gravid females. Interfering as little as possible, so that these things we care about are going to be around in the future. I do respect your concern about the practice and its negative consequences if done so haphazardly.