So I’m aware that you can’t choose your kintype, but I have a bit of a question. See, I’m still new to the community and terms, though I’ve been awakened for years. I am a Cybertronian who lived and died as a member of the Decepticons. But in the course of living this life, I’ve had a very different set of experiences, and don’t agree with those ideals or goals anymore. I know I used to be one, but I don’t consider myself a Decepticon any longer. Does that count as me “choosing” who I am?

That absolutely doesn’t count as ‘chosing your kintypes’, it counts as choosing to determine your own future and ideals. Maybe you can call yourself a cybertronian…