I'm more creeped out by that than anything. I understand that losing a loved one is difficult, but with something like this just seems to be one of those things that would make moving on much more difficult. Photos/videos of things that actually happened are one thing. Having an artificial computer voice that can lead one to think they are really speaking to someone is just creepy and I could see where someone with actual mental issues could get really confused.

I'm sure I listened to a scifi short story like this recently - but it was just text responses. Is a strange and interesting thought - I know that even listening to the voices of my children when they were little, can be really emotional feeling for me.

Having a deceased relative respond would be really odd, but could be soothing. What an odd world we live in now.

With the dead person's agency no longer involved, even without malicious intent, any feelings or behaviour such a construct might generate in its users will be artificial and manipulative.

This type of AI would have the potential to become a true basilisk with poisonous breath and all.

It's even better when a family member loses the ability to speak. Someone with a stroke may still be able to type words and this can help them deal with the frustration of not being heard.