The array version of this command seems to be buggy

Any update on this? It's really bad when you want host a server and go to the mission select screen then arma will immediately crash. People are probably thinking what is causing their arma to crash when it's include dependency in a mission file

I think the bug lies in inRangeOfArtillery because it returns true even when artillery cannot fire because of being too close to the target.

if you put the artillery really close to target (less than 100 meters) then inRangeOfArtillery will return false.

Put this in init.sqf for testing:
player sidechat format["inrange: %1", getMarkerPos "target" inRangeOfArtillery [[_artillery], "32Rnd_155mm_Mo_shells"] ];