A few thoughts.
1) The guy is a jackweed - Seems he gets mugged / robbed a lot, and I think I understand why
2) Half the features he talks about are available for Canon and Nikon - Plop in an Eye-Fi card and I can do remote shooting and change the settings from my phone or tablet with an App.
3) Remote tethered shooting can be great (getting camera in hard to reach places for interesting shots) but Wi-Fi gets overloaded quickly. Here is a test. Do a 3 second burst at 11 FPS with moving subjects from a tablet and wait to see how long it takes to get images transfered or get responsiveness back to your camera.
4) I actually PREFER the Eye-Fi route - why? Because TECHNOLOGY changes. Wi-Fi standards change over time and if you bake it into the camera, you are stuck. The next version of wi-fi is not something you will be able to change with a firmware update
5) Construction. Construction. Construction. The Sony is NOT weather sealed. Most of the heavier more rugged pro-DSLRs have some for of magnesium alloy body. I do notice a difference in range and strength of connection between my 5D MK III and my back up video t5i body.
6) I do like the Electric Viewfinder and can see some of the benefits.
7) I like "big" I find the size of the Canon's to be great as well as the layout of the controls to be superb where it is easy for me to adjust while still looking through the viewfinder. I find with smaller camera, the layout is more "awkward" at least for me to change several settings very quickly.
All and all I am glad some of these cameras are out there. Nice to have options, a decent travel backup, and have a feeling these will start pushing the bar on both Canon and Nikon. Survival instinct is a good thing.
I am not a big fan of Wi-Fi built in. I have used it, and in so many cases, I notice it gets bogged down. Might be nice if instead of building it in, Canon and Nikon give the ability to add modules for it, main reason being standards change... for example, MU-MIMO will only really start coming into being next year. The new 802.ac standard is just really hitting the market in stride and while 802.ac is nice, 802.ax looks to be monster with 10+ GBps transfer - so to my point, as these new standards come out, new antennas and hardware are needed, I would rather pop in an Eye-Fi Mobi Xtreme (Made the Xtreme up) into my Canon 5D MK IV and take advantage of 802.ax than be sitting there waiting on 802.n.
Expandability is nice.