Canon have never had any contact with ML project for any reason, to the best of my knowledge. The decision to stay away from 1D series was made by ML team, I would say out of an abundance of caution to try not to annoy them.
Independent of that: how dangerous is ML dev to the cameras themselves (in terms of brick potential)? Permanently bricking a camera in the price range of the 1DX is not exactly my idea of a good time. :-)
I don't think I'd want to learn the ropes on a cam too expensive to psychologically say goodbye to. Maybe save that for the second port.