It seems as though nobody in this thread actually read the article. They are not revealing user names on the site. The objection here is having the real name as part of your private profile data, in case of a future data breach. It’s a real concern, but orders of magnitude less serious than what everybody is assuming.
Shame on Ars for the misleading clickbait headline.
If this is the same one I read yesterday, wasn't it also attaching false information in some cases and changing information (to false information) without letting the users know? That's fucked up.
Not to mention attaching real names to profiles that were created with the assurance of anonymity.