Older model ≠ outdated and useless.
I didn't say that, the 5d2 was ahead of its time and therefore isn't outdated (yet). And the 6d is no alternative due to the consumer placement (usability and specs like 1/180 x-sync) though it might fix some 5d2 problems like banding, -0.5ev low light af and non-reliable outer af points.
What I did say is that Magic Lantern will have many more features in store for the digic5-based 5d3 because the cpu runs much faster and there seems to be access to parts of the camera that were out of bounds on the 5d2. Because I can do C and hack Magic Lantern this is interesting to me, but not thanks to Canon of course.