I'm one of those totally uncapable of making a good setup, let alone driving a good line/scoring a good time...
Few around here will even remember my avatar.
But what a ego-drama I'm reading on this whole setup issue!
If you really want your setup copyrighted, maybe Scawen can come up with a kind of "signature" forged into a setup, so, whoever will make a good PB/hotlap/whatever, there'll always be something like:
"Ripley - WR RAC@SO1 - setup by The_jealous_setupmaker"
So everybody will forever know who Ripley shall be thankful to, and The_jealous_setupmaker's craftmanship will be forever be acknowledged.