I am not going to debate thanking Rythal, especially since I haven't used Carbonite since early Burning Crusade, and I never used it in vanilla. However, I hope that everyone realizes that Carbonite has a copyright, and Rythal breached said copyright?
If someone came along and started modifying my addons without permission or violating my copyright, I too would be angry. Case in point:
here and
here and most especially
here.
On a side note, it should be to nobody's surprise that Carbonite's devs stopped playing the game. The community was more or less aware of that fact during early
Wrath of the Lich King. Great, there is an official update, but it is time to move on; yes, even if you "cannot play the game without Carbonite." Yes, of course you can. There are other addons that do exactly the same things as Carbonite, and do them better because they are specialized.