Graphs are unavailable due to technical issues. There is more info on Phabricator and on MediaWiki.org.
BRFA activity by month
Welcome to the eighth issue of the English Wikipedia's Bots Newsletter, your source for all things bot. Maintainers disappeared to parts unknown... bots awakening from the slumber of æons... hundreds of thousands of short descriptions... these stories, and more, are brought to you by Wikipedia's most distinguished newsletter about bots.
Our last issue was in August 2019, so there's quite a bit of catching up to do. Due to the vast quantity of things that have happened, the next few issues will only cover a few months at a time. This month, we'll go from September 2019 through the end of the year. I won't bore you with further introductions — instead, I'll bore you with a newsletter about bots.
Overall
Between September and December 2019, there were 33 BRFAs. Of these, Y 25 were approved, and 8 were unsuccessful (N2 3 denied, ? 3 withdrawn, and 2 expired).
TParis goes away, UTRSBot goes kaput: Beeblebroxnoted that the bot for maintaining on-wiki records of UTRS appeals stopped working a while ago. TParis, the semi-retired user who had previously run it, said they were "unlikely to return to actively editing Wikipedia", and the bot had been vanquished by trolls submitting bogus UTRS requests on behalf of real blocked users. While OAuth was a potential fix, neither maintainer had time to implement it. TParis offered to access to the UTRS WMFLabs account to any admin identified with the WMF: "I miss you guys a whole lot [...] but I've also moved on with my life. Good luck, let me know how I can help". Ultimately, SQL ended up in charge. Some progress was made, and the bot continued to work another couple months — but as of press time, UTRSBot has not edited since November 2019.
Curb Safe Charmer adopts reFill: TAnthonypointed out that reFill 2's bug reports were going unanswered; creator Zhaofeng Li had retired from Wikipedia, and a maintainer was needed. As of June 2021, Curb Safe Charmer had taken up the mantle, saying: "Not that I have all the skills needed but better me than nobody! 'Maintainer' might be too strong a term though. Volunteers welcome!"