'm a writer myself as I love writing fantasy stories and writers do get inspiration from other stories. We just tweak it to fit our own setting. The Forgotten Realms was inspired by Lord of the Rings. So if someone makes a comparison between the Forgotten Realms and Lord of the Rings to explain something, that does not mean its an unfair assessment or biased. It's finding a similarity between something and say "Hey it could be possible that this could be that as it has been done before." That doesn't make the person point of view invalid just because you refuse to even try to see something in a different light. You didn't play Dragon Age which is why you don't understand my comparison and that's fine. The impression that I'm getting from you is that you like Gale so much that you refuse to see any possibility of him turning against you. That's blind loyalty. For example, I like Astarion as a character but I'm not dismissive of the possibility of him turning out to be 100% evil. My hope is that I can change him to be good, but if not, then it is what it is. The problem is you don't want to accept that for Gale, to you, he just HAS to be good. You seem to be stanning a little to hard for him to the point that you refuse anything negative anyone has to say about him. Just because a character starts off with an alignment doesn't mean it can't change later. Nothing is set in stone.
I'm also a published author, and let me tell you that saying 'this character reads suspiciously, because this other character in this other story started out similarly and was super evil' is not something that is ever going to fly in any critical review. I'm not refusing anything; point to anywhere where I have, if you can. I literally just suggested one likely possibility of a way he could betray you in the future, above. What I'm saying is that right now, within the context of the game itself, and not referencing other media - going off what we have right here and now, in this game with these characters, there isn't anything that I can see that is grounds for legitimate suspicion of him being anything other than what he presents. That could very well mean that he's better at hiding it than most - I'd make my normal complain about Larian and their personal mary-sue characters being able to lie to us flawlessly because they want them to, while we're not allowed to keep anything back from them, ever... but setting that aside, he could be. Right now in game, however, there's nothing legitimately suspicious about him that doesn't require some kind of external bias coming from the viewer mapped onto him. The fact of the matter is that at the moment, Gale has never lied to us at all - and he's one of the few characters that hasn't.