I am slightly new at this Internet stuff but a find common sense kicks a lot of BS to the curb. Of course we know the rumour mill on the Internet is small. (sarc).
A friend that is very net savvy told me he was using a vpn service with a rotating random IP spoofer to download P2P movies. But then that was when it was worthwhile and cheap on-demand movie services didn't exist as much.
I think there is originating IP information in the packets anyway. It would logically seem that, despite jumping around 99 lily pad redirectors the frog still has to know how to get back home. OTOH, personal routers do this, remembering where they got the request from, but everybody externally only gets the ask from your ISP address.....maybe?
I don't know. Can you trust anything when most information is based on somebody trying to sell you another expensive wall.