The screen is too small for the elderly. You're not going to get much information on there if you have to show large text, assuming that's even possible.
I think the idea is in the ballpark but the form factor is not ideal. The screen should be much bigger so notes can be left for others - maybe from scribbles rather than voice - and calendars and shopping lists can be seen from across the room.
This looks like someone at Apple took a recent Alexa and said "We should do one of those" instead of something more adventurous.