@bulls4ever -- You bring up some interesting points. Let's take a second look at that first post:
1D support
These cameras are way outside our reach. Even if we could buy them, very few 1D users would benefit from ML.
Sure, at some point, some of these might become possible, but chances are extremely small. Spending time on those is effectively searching for the needle in the haystack.
That was written 5 years ago. Note that a few of those items on the original post have been struck out.
Today a used 1D IV can be bought for less than a used 5D mark III. It uses dual Digic 4 processors like the 7D and pretty much all the EOS cameras from that era have been ported. So it
might be possible. Of course possible doesn't mean that it will happen. If you want to push this to the next level try
getting a rom dump. Chances are it won't work (rom dumper doesn't work on the 7D) but you can give it a try.
Even with a rom dump in hand whoever takes on the porting task will have a lot of work to do and will probably get little help from the other developers. As far as I know most ML developers are not willing to mess around with any camera in Canon's pro line. This means that if you really want this you're pretty much on your own.
Just a minor correction on your statements, this is an APS-H camera which has a 1.3x crop factor. Yeah, pretty much a defunct format.
Finally, I'm not trying to bump heads with forum moderators or waste developer's time. I'm just saying that this first time poster is bringing up some interesting points.