It doesn’t work like that. You only get to place bounties if you are the victim of illegal aggression. Basically how killrights work now, except the ISK doesn’t go to the guy that setup the killright - it gets paid to the hunter.
I agree that any system that allows players to flag anyone for legal combat in Highsec would be utterly broken. It has to based off a revenge system otherwise I’d just dunk on Freighters and Jump Freighters all day with nothing they can do about it.