I had been under the impression it was relatively common knowledge that the reason Reddit had been keeping both the API and old.reddit alive was that power users - both moderators and the most prolific content submitters - disproportionately used those interfaces and were considered too valuable to alienate. I have been surprised not to see much discussion about what, if anything, changed about that situation leading up to the current kerfluffle. Have enough power users been moving over to new.reddit and the official apps? Or has Reddit's calculus as to the importance of that segment of the user base shifted?