I'm saying reddit will not ship a trashed deliverable. Guaranteed.
Reddit will have already preprocessed for this type of data damage. This is basic data engineering and trivial to do to find events in the data and understanding timeseries of events.
Google will be receiving data that is uncorrupted, because they'll get data properly versioned to before the damaging event.
If a high edit event happens on March 7th, they'll ship march 7th - 1d. Guaranteed.
Edit to be clear: you're ignoring/not accepting the practice of noting high volume of edits per user as an event, and using that timestamped event as a signal of data validity.