I'm grateful he said this, and feels so strongly about it. I really dislike the concept of "player-sexual". It seems to me to be an indulgence of personal vanity at the expense of marvelously crafted character.
i don't necessarily agree with this, or with David's view. I don't think there is anything wrong with the idea of having player-sexual characters nor do I think that they then have to be written as bisexual. I think you are making the assumption that an NPC's sexuality has a big impact on their personality and I'm not at all convinced that that is true in Thedas. I do agree that making an NPC player-sexual means you have to have (at least) two versions of the character or avoid ever mentioning their past relationships but there are certainly characters where I think this could be achieved (Dorian is obviously not one of these).
Having said this, I have absolutely no complaints with how Bioware approaches it, nor would I want them to change the way they write characters, nor do I think a sexuality toggle is a good idea!