What if you used the exploit to change someone else's modem speed? If you are the who's modem was modified, how could you prove this in court? It sounds like it

What if you used the exploit to change someone else's modem speed? If you are the who's modem was modified, how could you prove this in court? It sounds like it'd be very difficult. However, if you can somehow prove this, then you can just alter your own and claim someone else did it externally and claim it's their own fault because they provided a device that was exploitable. Note, the premise of this comment is based off another commenter's claim that you can pull this off remotely and don't actually need to be on the local network.