What "choosing the target" means has been fuzzy for a long time too. We've had beyond-visible-range missiles for a long time that are basically "fly to this grid square and find a target".

I don't think people realize how much horsepower are in missiles now.

The JSM has at least one multicore computer + IR camera + RF homing for target identification (plus GPS, terrain matching/following and inertial for navigation). It can automatically identify not only the best target (and recognize and ignore decoys etc), but also the optimal weak spots to impact.