Honestly, the easiest thing to do is put it on a mesh VPN like Tailscale and connect their streaming device to your tailnet. If they’re non technical parents then if their TV OS doesn’t support Tailscale, you can pick up a Walmart brand ONN streaming box for <$50 which supports for Tailscale and Jellyfin.
Port scanning in and of itself is not really abuse.
Being a script kiddie that’s abusing AWS abuse report process on the other hand…