Note: this is different from listening to recordings from the actual person.

Having loved ones die is one of life’s universal terrible qualities.

Clearly losing someone and being able to deal with it is an important life skill but just as we build technology powered aids for other situations, I don't think this would be any different

It would be cathartic, but in this case you wouldn't be talking to them but to a computer, who (at best) is pretending to be them.

I think it's kind of creepy, when you really think about it, and it reminds me of the aversion the creator of Eliza had to his creation when he found out that people were spilling their guts out to it and treating it as a real person.

Which isn't to say that it can't be helpful to talk to something that's not a real person (and especially not a formerly living person you once knew) can't be healing. But if people get confused by these machines in to thinking the machines are actually people close to them that died and are now living again, that will make them vulnerable to some really serious manipulation and delusion.

In the end, I don't know if any of that works. But what's being subscribed doesn't seem too far outside the norm. Deprivation often leads to desperation for even a taste, however imperfect it may be.