I completely agree. A huge business with a singular focus isn’t going to pivot into the music business (or any of the myriad use cases the general public throws at it). And if they did use someone’s info, it’s more likely an unethical employee than a genuine business tactic.

Besides, the parent program uses the API, which allows opting out of training or retaining that data.

Yes this makes perfect sense. As we know, businesses definitely do not treat data as a commodity and engage in selling/buying data sets on the open market as a "genuine business tactic". Therefore, since the company in question doesn't have a clear business case for data collection currently, we can be sure this data will never be used against our interests by any company.