Maybe the joke was too vague...
Comparing an iPhone 7 Plus to an ARRI Alexa is like comparing apples to oranges that have a 35mm CMOS sensor and 14+ stops of dynamic range. It's completely unfair and contrived and stupid.
I don't think Canon cares much about the 4K hack, or even ML for that matter. ML can only get, what, 15fps at 4k? What percentage of their market is this going to affect?
Canon's firmware update, I'm sure, will be in response to the Mark IV's lack of use in the video world. Having it fit within the Cinema EOS line will be a big advantage as they try make up ground in the DSLR space that they once exclusively owned. Having C-Log in the Mark IV will make it easier for us to use in our workflow as a B-Cam alongside the rest of the Cinema EOS cameras.
I believe that even as an external GPU it won't be possible to use a 1000 series GPU on a mac until they provide drivers.
The lack of support for 1000 GPUs is a bit telling of Apples product strategy. It doesn't sound promising either. PC here I come.
*insert mad men "I don't even think of you"*
I think the point is to merge their customer base so that they can more easily expand into other markets and gain more of a market share. You likely won't lose support in your state.