That is not an "invention", just stop lying m8.
the big orc who trashed Arondir around by example, completely unarmed, 100% bullshit
You have to grasp at straws and split hairs, look how desperate your defense is "some of the one who attacked the protagonists, were armed, so you are wrong hahaha me win", yet you don't realize how this does not erase the fact that some orcs were not armed, or purposely didn't finish off the protagonists, because plot reasons, again, case in point with the big orc and Arondir.