They already do, as far as I understand it Phalanx CIWS can identify and choose to target an object based entirely on radar and other internal sensors.
In war, weapon speed triumphs safety concerns.
And hypersonic and laser weaponry is only going to decrease that.
We've been in a delegated authority regime since the USS Vincennes / Iranian Air Flight 655.
There are already shifts towards a delegated-preemption regime in EW (see: efforts to equip EW suites with self-adaptive capability). I can't imagine we won't see the same thing with actual weapons.
Sure, put a human in the loop, if there's time. Otherwise...
It's an automated, super fast, self-aiming gatling gun.