Mildred is of course free to be anonymous ... but can't be surprised that others who feel a need to protect their identities may chose not to share as much information with her. After all, what do they really know about her? She doesn't even want to reveal the country she is from. Why should they trust her?
Absolutely right. And those who have country identifiers may turn out to be untrustworthy too. I don't see how choosing NOT to disclose a country in public is less trustworthy than choosing TO disclose a country in public. This is the internet. We need to cautious with everyone.
IMO trust is a two way thing - we all share a little about ourselves in return for some trust in the other party. I think sharing the country we're located in is a small, small thing to share but provides some additional trust potential in return.
That's fine IN PRIVATE. There are several I've trusted that information with over the years. Having a default public country identifier removes the choice of who we want to trust with that information. You make it public and ANYONE, trustworthy or UNtrustworthy, is privy to that personal information. You remove the choice. That is wrong, that is irresponsible, for this kind of forum.