The answer is obvious; they want to milk your time; at the very least they could drop the Ranks as a “Rewards indicator” and introduce a proper points system that accumulates over time (and keeps the Transparency of showing your MMR instead of hiding it from you (e.g. being in Gold rank and still getting the highest level MMR opponents you reached the previous month anyway).
The problem is that there is also SEVERE CENSORSHIP; e.g. this message will probably be deleted without reasonable cause and I’ll be banned (again); it’s your responsibility to propagate this message if you agree after that happens (if it happens (it most probably will)).