@Michelle1164 I can't see where the address still being visible after a completed stay is of any concern. After all, an already hosted guest knows where they stayed. And if they have written down your phone number, or entered it into their phone contacts, they would have that as well until and if they delete it.
I write down my guests' phone numbers and email addresses in a little book and keep that info, so Airbnb deleting it doesn't matter to me.
So while I agree that it's a double standard, so are much more serious things about the way Airbnb deals with hosts andd guests, and it's not anything that concerns me.
What would concern me is guests who have cancelled and never stayed having access to that info.