Earlier quoted context omitted.
> You are "opting in to sharing your prompts for training", by default in this case. The English term for that is "opt out" not "opt in." To opt is to choose. If something is on by default, you have not opted in. You were forced in, and turning it off means you must opt out . (I.e., choose to be out.) normally I wouldn't care about a mistake like this, except that opt in/out are very important concepts in software de…
They said "opt in to training on prompts by default," which is coherent English and perfectly fine. The phrases "opt in" and "opt out" will always be contextual based on what is being opted, so it really falls to the reader to pay attention to that context. Please don't give English language advice as though you are an authority; there is not a rule of the English language that would make their usage unacceptable.
Note that I’m not using English grammar as my argument; human language (and English especially) has plenty of exceptions and expressions which make little sense, and if people were to adopt this phrasing en masse, it would naturally become a part of the language, whether it makes sense or not. My argument is that adopting this phrasing is a terrible, user-hostile decision and in my honest opinion we really, really, really ought to avoid it.