What other arguments where there? Could you link any please? There are a lot of counter arguments here and quite a few simply don't take into account the OP proposal.
Just off the top of my head there was the combat scenario, i.e. when are you in combat?, for example gaining a tactical positional advantage in a Nebula system, asteroid field, behind a capital ship whatever. The counter that 3rd person is out of combat only is vague to say the least, if, you can get a significant tactical advantage positionally before a shot has been fired and have your 'shoot first' and/or potential escape vectors planned through using some aspect of 3pv then you have gained an advantage. Even if that advantage is small it is an advantage nonetheless.