Fair enough. Agreed.
My point is that readers have the right to know who they are supporting.
If pen name Suzie Question is Sandra Kay then fine we’re reading and loving the work of Suzie Kay and supporting or batting for her (Sandra Kay).

That’s fair enough. We have a right to know who and what is behind the facade.

If we support you then we havr a right to know who you really are.

[…] Informations on that Topic: hiddengemsbooks.com/amazon-outing-author-pen-names/ […]

It is a big deal. I would never order a stack of books under my pen name. I don’t even want the mailman knowing what my pen name is. There are reasons why I go through great lengths to hide my real name online and that includes stalkers, scammers, and crowds. Wait until your name is big enough to care and then you will care.

I think you’re missing the point here. The issue is not that the letters went to their home address. Yes, that was provided to Amazon. The issue is that the letters were addressed to the pen names, not the real names. They should ALWAYS be addressed to the real person, not to the fictional persona. All of the contact info on those pages for the authors that got those letters had their real names entered in along with their addresses. They did not have their pen names listed there. The only place that should have their pen names is KDP, yet somehow Amazon Advertising was able to access those pen names and use them to address letters instead of using the real names that should have been used. By doing this, they exposed the pen names to anyone that happened to see that unopened envelope.

Also, where are these authors having their paperback orders sent to? How is this any different?

I’m not sure we have all the facts to this story.