This research excludes any incidence of the word "cunt" that appears in revisions other than those that are currently live, right? Since it relies exclusively on the search engine, which only returns live results? Doesn't that seem like a substantial weakness, and one that undercuts any year to year frequency analysis?
Also, can you confirm if I'm understanding this correctly - the use of the word in a discussion about whether it is a gendered insult or not, or in a discussion admonishing a user to stop using it as an insult, counts each use (regardless of intent) as an additional incident of gendered insult?