Is adobe trained on their own library of licensed images, as opposed to scraping whole internets?

If so, even as a private individual just fooling around, I'll start using it from both legal and ethical perspective as long as it's reasonably equivalent to other models. And this from a person who's been fairly vocal against adobe's cloud subscription model ;-<. I can only imagine for anybody with a commercial need it would be an immediate no brain er - they'll have an established relationship, account and billing, they'll perceive it as integrating in their work flow, and it'll just become another part of the pipeline.