Well the only thing so far that has made the AI attack the radar installation is the SEAD mission, which I can't set the weapon type or release amount.
That said, for some reason, adding a wingman to the AI (it was singular all this time) did finally result in one of them sending a singular Shrike at the target.
Which is some sort of success at least.
By the way, when I tried f-18 hornet's mission up there, it told me my mission editor is an older version than what that mission was made for.
I didn't know it was possible to update the mission editor independently from the base game?
Or is it because he is using a yet unreleased patched version of the game?