I can't help but see in this a new form of modernized, digitalized mortuary ritual, comparable to all the things we humans have been doing with our deads for millennia. Egyptian tombs sought to preserve the body; now with big-tech tombs we seek to preserve the mind, what's left of it, what has been revealed by the deceased. I bet this is just the beginning of that.
The work of historians is changing, fast, in this fledging computing era. Think that, from now on, we may be increasingly able to replay then-dead-but-real people in real situations as if it were just another virtual world.
Which leads to this suggestion: maybe all the data held by big tech companies should be released for public research (public datasets) upon one's death, after anonymization etc. of course (and maybe a 'wait' period of 10 years, or a full generation or more, whatever precautions are necessary). The point being to learn cumulatively from all our deceased brothers and sisters, make them count forever in the great study of humanity and the cosmos. Of course people should choose for themselves (including delays and anonymity), like some have donor cards, may prefer incineration, etc.