They'd clearly dumped the memo they got about the reduction into some AI with a prompt to write a "fun" announcement. The result was a mess of weird AI positivity and a fun "fact" which was so ludicrous that the manager can't have read it before sending.
I don't mind reading stuff that has been written with assistance from AI, but I definitely think it's concerning that people are apparently willing to send purely AI generated copy without at least reviewing for correctness and tone first.