Given enough foresnsics, it's possible to link pseudoanonymouse identities to real identities. See chainalysis. I'm sure if you apply stylometry to either of our posts, you could uncover our identities. I think there was a post here doing just that.

So my real problem with the pseudoanonymouse model is that when if fails, it generally favors centralized institutions in who are capable of the surveilance needed for correlation. It is asymmetric. People say that bitcoin's transparency is a feature, but the feature is only accessible to those with the metadata, like arkham or chainalysis. Reputation systems can be very useful though.