LiveScience.org mentions the same question back in 2020

Of note, it’s unclear whether the dog died a natural death, or whether it was killed to be buried with its human. An analysis of its remains may reveal this mystery.

I couldn’t find an answer though. Most online sources of the discovery are from back in 2020, then it’s just memes.

A fundamental flaw in this, is it still involves user data, even if “anonymized”. You can advertise without any user data. We do it all the time. Does a television channel know your gender? Does a radio station know if you bought a car recently? Does the newspaper know your hobbies?