I would say most of the birds are of pure wild stock. I have heard there were more than 150 total released over a couple years. The people around here love them and feed them year around. Last year I saw a flock of over 40. There arent a lot of good places to hunt them but you never know where they might be.
If poults were caught and brought over, then wild stock doesn't mean much, once they are imprinted on people. You know, feeding and caring until big enough to turn loose. Even being from wild stock in a situation as you describe, they are tame turkeys and will get tamer. There will be people eventually in the neighborhoods that will get tired of the mess....scratchings in flower beds, droppings on sidewalks, roofs, decks....cars...yep sitting on the top of cars. With that you probably gets scratches too....lol.
As I said before, those kinds of turkeys give turkeys a bad name.