@baldur I object to opt-out analysis of content that’s not private. It’s not clear the analysis here matches your description though; this same text would also cover analyses such as measuring what percent of Lightroom images are landscapes, which doesn’t involve taking images and including them in a training set.
@stig AFAICT, most current machine learning approaches involve building a training set of some sort?
Also, after its history Adobe does not get the benefit of the doubt from me.