Immersion

[Zojha]

Then there're things like the DRK storyline up to 50 that show you that no, we're not really ok with all of this, so that leaves plausible deniability about how honest our characters are on other times.

And that same quest is also one of the prime candidates to point to when claiming that there actually is no room for self-interpretation.

They not only force very certain feelings on your character, they also enforce how our character copes with them. What if your character WAS in fact okay with all the things happening in the MSQ? He can't be, because DRK quest. There is no way to just give in either, even when you are alone with yourself. I know the EN script is excessively vague, but if you look at the JP script, it's very explicit that you are, in fact, doing this not for bloodshed, but to protect the weak, because you desire to fight specifically for others, not because you just like fighting. In the german one, similarly, it's explicit you are doing it because you simply 'want' to suffer for others and that's precisely why you excel at being a Dark Knight. I haven't done the SB quests yet, so I can't judge those, but so far, no, there is no room to interpret yourself in a way that supports Zenos view. The guy was just projecting.

Personally, I wager the main reason we don't have a voice is simply the work it would require. Everyone would want to have the voice they picked at character creation, rather than a generic one, and that would be way too much work. Self-interpretation IMO is no argument at all - The puppet strings go all the way into our heart, into our deepest, darkest feelings. It's all tightly controlled.