On a technological basis all this bickering is pointless because this is all very much like the fairly fast switch-over from CRT (Cathode Ray Tube) television to FLATSCREEN LCD, LED and OLED HD television, where a newcomer technology (diode or plasma-based displays) simply STEAMROLLED over everyone else with a newer, better-looking, more economical and easier to manufacture technology.
And in the case of DSLR's and Mirrorless Interchangeable lens cameras, THEY are going to be utterly STEAMROLLED into niche applications by large sensor super-smartphones! Now that i've had two of them in my hands PERSONALLY for the last little while, I can see why Canon's Rebel, 7D-series, M-series and even 5D/1D series AND Nikon's D5/D850/Z6/Z7 series will be OBLITERATED soon enough by fully mirrorless, GLOBAL SHUTTER large sensored (2/3rds inch, M4/3rds and APS-C) all-in-one smartphone devices!
The combination of computational photography software AND large global shutter sensors AND Android-based large-memory-storage super-smartphones KILLS that DSLR and even Mirrorless Interchangeable Lens Camera market dead! We all KNOW Canon and Nikon ARE coming out eventually with MIRRORLESS Canon Pro-level 5D/1D and Nikon D5/Zx series cameras and THEY WILL DO VERY WELL financially because THOSE brands are what the pros trust and will CONTINUE to buy and use! However, for John and Jane Q. Public, everything else in their camera lines is toast because of these new all-in-one super-smartphones which offer bigger bang-for-the-buck in a SINGLE device!
The MILC at the lower end is dead in the water because on these new super-smartphones, I can put different lenses on them with a simple addition of a plastic/metal cage that has a removeable SSD storage compartment and lens attachment accessory which costs less than $250 US !!! I can use these large-sensor smartphones as-is but if I want more than the 2x optical zoom and extra image-stabilization, I will PRO-ertize my new super-smartphone with this extra $250 cage accessory cage which allows me to switch out various prime or zoom lenses, put in bigger batteries and add more storage capacity! What's NOT to like about that?
For the NEWLY graduated videographer and budget filmmaker, the super-smartphones will take over from the 7D and M-series cameras and for the pros, they will buy a mirrorless version of the 1Dx3. The Hollywood cinema user will get the NEW upcoming 65mm/70mm sensor medium format 8K 16-bits per RGB channel 60 fps mirrorless global shutter cameras! Mom, Dad and Siblings will buy the lower-end versions of these super-smartphones and call it a day using just the built-in 35mm lens AND using them for doing typical smartphone activities such as phones calls and internet access!
.
.
So Remember, YOU READ IT HERE FIRST !!!
.