So is contract mode, but no one cries when you have to kill the targets by accident or sniper or whatever specific way that contract is set to.
And we haven't seen his route or even where on the map this ET takes place. For all we know there could be 4 different obvious places to kill him, and god kniws how many "off the path" kills there are. Some might get creative and lure him somewhere different with coins. Or cause a distraction and somehow get him into the right spot.
I guess what I'm trying to say is... Don't complain before it's out. Sure I could be wrong, and there could be just one fixed spot to kill him, and it would be a boring ET. And if that's the case then so be it, I don't mind