Respectfully, I worked for Alexa AI on compositional ML, and we were largely able to do exactly this with customer utterances, so to say it is impossible is simply not true. Many companies have to have some degree of ability to remove troublesome data, and while tracing data inside a model is rather difficult (historically it would be done during the building of datasets or measured at evaluation time) it’s definitely something that most big tech companies will do.
I don’t know why Amazon hasn’t bought TikTok yet.
Lots of data, access to the Chinese market, a social media app under their wing, and an aligned work culture. Alongside the gains for ads, moving their shit to AWS, and retail gains, it seems like a better idea than throwing money into the AI fire.