You need to get out more on Public land. The "Grown ups" will use that one day to kill a doe the easy way.
Are you saying there will be adults hunting in October with rifles without the kids being there?
Why would they need a transferable tag to do that? It's their own doe tag they would use anyway, not the kids.
If they are going to go out, on public land, with a rifle in archery season, they're not even being sneaky anymore. They blatantly poaching in broad day light.
And the kid is in school with your nephew, so they can't tell the game warden that they're "youth hunting". They're hunting with a rifle in archery season with their own, adult doe tag.
One question, though: Why wouldn't these guys just use a scoped, in-line muzzle loader?