So where are my wanted authority ships then? ;P there aren't any.
You do get them, rare I grant you but they do appear from time to time.
Only other input is while it's a broad sweeping statement "no one is forcing you", it's also very valid from the point of view that everything out there shouldn't be all nice guy stuff. This sort of dilemma has been in the game from the very start with the Bulletin Boards / Mission Boards. The various factions that are supposedly 'the good guys' still have smuggle this, assassinate that, or steal whatever. So you're 'forced' to make a moral choice, do I do these missions? Do I continue to work for the faction but avoid aka pretend they don't exist, the 'bad guy roles'? Or do I resolve to either ignore or act against that faction? So with that in mind you could also argue that any number of factions could be implicit in slavery, in murder, in theft, or smuggling. Or all of them.
So from a moral point of view, just because the ships aren't wanted, doesn't mean they don't deserve some kind of justice. Besides, you're not killing them as they eject just like we do.
However, when it's all said and done, you've got a choice of morals to make. One of those choices is probably quicker and easier than the other, but only you can decide which one is the right one. Blame the factions, they started it all...