Revealing private data is a bit weirder, but it is common for companies to release occassional anonymized data. They sell much of this data to advertisers who get to see all of it, so it serves as a reminder of that. But again, nothing out of the ordinary.
The attitude of the post is the big WTF. If I went up to anyone I knew, and said "you do <X>, who hurt you?", I'd be smacked, a fight would start, or I'd not see that person again. The post is basically saying "To one of our users (you know who you are!): Fuck you!" Why would any PR employee think this is okay?