Blaine
Cis-Het Oppressor
What I think he means (or perhaps more accurately, what I hope he means—given a theoretical universe in which I actually have any expectations for this game, that is) is that although the main character is a thief, by providing players with the option to act out of character to a limited degree, the illusion that your character is "choosing" to be a thief in a world where other life paths are viable can be more readily maintained.
However, they're balancing the entire game around this concept, which... well... these are folks who can't let darkness be dark, so... yeah.
However, they're balancing the entire game around this concept, which... well... these are folks who can't let darkness be dark, so... yeah.