The game isn't actually saying that being adopted is a horrible thing. Taken in context, it's just showing what an ass GlaDOS is and can be safely discounted. You don't see obese people getting up in arms about the fat jokes, do you? That's because it's all about context. The father doesn't understand this, mostly because he's apparently not very bright, and thus the controversy.SteelStallion said:Responses here are so typical, you're all gamers that aggressively defend video games to the death. I don't even need to click the comments anymore to know what responses are going to be like.
While it's true that there's nothing really offensive in it save for a few people, I understand that the dad was shocked to hear the remark out of the blue. He didn't say he was hiding it from his daughter, he said it just never came up. He was waiting for an opportune time to sit down and have a talk about her being adopted.
That's why it probably came to such an offensive shock, because now they're going to have to tackle the issue right away since shes heard that, rather than wait for whatever time they might have felt appropriate.
And besides, it's not like it's saying that SHE is adopted either. Gabe N. doesn't show up at her house and go "Hey, you. Asian girl with the white family. You're adopted, sucka fool"! The girl would have probably completely overlooked it if the family wasn't trying to get their fifteen minutes and went to every place imaginable to tell their "story".