I guess there is some, but not too much valuable content in spoken personal conversations. Current tech is not there yet, so it would be more costly in money and reputation to build some datacenters for this yet. If the money cost would go order of magnitudes lower they would wrap it in some marketing bullshit like “you can search in your all memories”, lot of people would gladly allow it (iirc there was a black mirror episode about a device like this)

I think it won’t happen tomorrow or in the near future, my point was they just reposted a 6 years old article without writing about a new and relelevant development in the topic.