You're right. The warning said: Be careful what personal information you post or give to other posters, since you could be exposed. To that, one should add: Be careful that your story is not too interesting, or people could demand that you expose yourself in order to "verify" that you are real. If you don't "verify," you will be investigated.
Hmmm, funny, those two things aren't so different after all. Forced expose, and um... well, forced exposure. Makes no difference whatsoever which direction it comes from. Had the "warning" come from someone who had not participated in an unjustified witchhunt, and still publicly stands by her suspicion until said anonymous poster "verifies" her real-life identity, (whether she originally wished to expose herself or not,) I don't feel I'm missing the point at all.