After my dad passed away, getting a Skype popup "<dad> is available" was heartbreaking. My mum switched his laptop on, I had to make sure his accounts wouldn't appear as available after that.
I think I agree that some people would benefit from a chance to this framing. However, I am not sure I agree that everyone will, or that those who prefer not to be reminded (particularly at random and unasked for) are turning up their nose at serendipity, as it were.
For me and perhaps for others, I find set and setting to be very important when remembering the deceased. How, where, and when makes a big difference in how such remembrance makes me feel, and whether it helps with acceptance and closure or not.
I find that intentional, set aside times for grieving rituals-- or celebration rituals, as is sometimes the case-- is the best approach. But being blindsided by loss hurts and profits little.
Death is complex and people/cultures have all sorts of different feelings on it. I don't want to get text messages from my dead sister or emails from my dead grandfather. It's creepy and weird and unsettling (even if just for that split second or two before you figure out wtf is happening).
Hard pass.
I think it will be intriguing to see if this new world of interconnectivity and constant reminders of those who are no longer with us will aid or hinder trauma recovery.