He's welcome to raise the issue, but I'd also point out that as much as he claims to now remain in games whatever the circumstances, his last resign was all the way back on...November 10. The one before that was October 31.
Yes, NMRs/CDs can ruin games because they shift the balance of power. MichiganMan has ruined at least 114 such games in his time on the site (likely more, as some would have been cancelled or his power would have completely been conquered before the end so he would not have gotten a resign). I'm glad that he's now sensitive to the problem, but I strongly suspect his two resigns in the past two weeks are more than almost all of his opponents over that span.
The point is, players on the site have different views on the level of commitment that's made when joining a game. Most believe that it's a commitment to keep submitting orders until the game ends, even if it goes poorly, but others take the view that when the game stops being fun, they can just leave.
The site offers a solution -- we can create games that are only open to players with a history of continuing to submit orders. I can appreciate that this might cause a problem for somebody who regularly would CD in the past and has since reformed, and I'd be in favor of a revised RR system that gradually phased out one's history in favor of recent games. That way, a player with a poor track record could establish themselves as reliable and then be invited to high-RR games. However, it must be said that such a solution would leave MichiganMan deservedly excluded, because he continues to abandon games when they go poorly for him.
The flip side of creating a high-reliability game queue is that players who frequently miss turns can no longer count on finding opponents who will diligently submit orders for every deadline. Rather, it means that MichiganMan will increasingly find himself in low-reliability games against players whose sense of the commitment made when joining is similar to his own. That seems fair to me - I want to be in games with players whose sense of commitment is similar to my own as well, after all. And in a game with players who feel that regularly quitting is okay, then I think it's unreasonable to expect that players won't quit. I sympathize because it makes the game look less like the version of Diplomacy that I enjoy playing, but I think it's unrealistic to expect otherwise.