I would argue there is a very clear unambiguously correct choice of wording for that case. The setting was opt out. It's a binary concept and which case it's in is determined by the default given no user action. If it is opt in, then it is off by default and you have to make the choice to turn it on. If it is opt out, it is on by default and you have to make the choice to turn it off. If it was enabled automatically it is opt out. There's no need to complicate the meaning of terminology with a straightforward definition. Given you don't take active action, that you accept all defaults and take the path of least resistance, is it enabled or disabled by default? That's all that matters.