Damn, I had no idea about this. Definitely would've changed some things had I known that emails were public.
This honestly seems like a bit of a design flaw.
Yeah, they have ignored everyone's concerns about the email thing.
https://github.com/internetarchive/iaux/issues/892
https://archive.org/metadata/naturally_a_girl/metadata
One way or another, there was going to be someone who would take loads of emails with a username attached to it. A bit intrigued by how the hacker compromised the database and got the passwords.