Is there a place for anonymity in our digital future?
Situations where you want to discourage abusive / antisocial behaviors (especially those with potential real-world repercussions for the victim) or be able to enforce real-world repercussions for said behaviors.
I hope so.
Imagine that you can effectively anonymize the dataset, I think one can think of circumstances where this could lead to a more effective communication as to provide further information (e.g., submitter's domain familiarity, language experience, resource constraints) and context (e.g., is this a standard practice) instead of fishing for more clarification in an iterative, and therefore less efficient, fashion.
If you take the perspective of a consumer internet business, then knowing your user is pretty valuable, and may help in monetization and UX.