What are you talking about, these kind of tech have been available in industry way before (eg hypertargeting / profiling in adtech), and is entirely unrelated to LLMs or Jev.
I am talking about the article, which is applying LLMs and Jev to make those existing toxic patterns more effective and efficient.
> This is foundational for any company wishing to do outreach, personalization, or analytics on customers. You can’t know, for instance, the lifetime value of a customer without being able to map all their purchases to a single identity.