>Are any cruise missiles launched and then flown around until you notice something of interest to sink?
No they don't, but they can change the target in flight, flight evasive maneuvers, coordinate each others and so on, but they are missiles and not Drones.
It's a flexible distinction. Loitering munitions and combined ISR+kinetic portable weapons are a major focus area for medium to small militaries, and consequently as a product for arms exporters.
The key benefit is providing tactical situational awareness for militaries that may not have such a capability at the strategic level (e.g. optical satellites, high endurance drones, air superiority).
Israeli and Turkish systems were used in the recent Azerbaijan-Armenia conflict.
Let's not be pedantic. From the wikipedia link: "Loitering munitions fit in the niche between cruise missiles and unmanned combat aerial vehicles (UCAVs) sharing characteristics with both. They differ from cruise missiles in that they are designed to loiter for a relatively long time around the target area, and from UCAVs in that a loitering munition is intended to be expended in an attack and has a built-in warhead."
No they don't, but they can change the target in flight, flight evasive maneuvers, coordinate each others and so on, but they are missiles and not Drones.