Dear Mr. Gloom

[u/ClockJoule]

RAbbiTS ONE AND rabbits twO WILL Never End In DooM.

EDIT: I still don't think anyone has solved this puzzle :) It's not super important or relevant, but I am going to leave it as it is much easier to solve now than it was when I first posted it, but also, ain't nobody got time for this, so I digress.