Battery Life (CIPA)
- 2850: Canon EOS-1D X Mark III
- 760: Canon EOS R3
- 320: Canon EOS R5
- 360: Canon EOS R6
- 660: Canon EOS R7
- 450: Canon EOS R10
When making assertions provide citations.


As normal use case has users using an optical or electronic view finder we cannot typically opt out of using it when we frame an image. It would be best not to blame the EVF for everything. Rather we should look at the body in its entirety if it can do thousands of images per single charge.
Battery life is a key concern as it would mean user needs to buy/bring more battery to get the same stills per single charge.
Are end users willing to bring more heavy batteries to get 100MP with more than a 1,000 frames?
When I buy memory cards I tend to match the rated CIPA battery life to how many RAWs the said card can hold.
So once battery's exhausted I also swap out a new CF card.
Let's address your continued use of drama in these discussions...
a) Those numbers ARE NOT fact. Battery life is much much better than CIPA numbers. We know this, we have the experience.
b) LP-E6 batteries are heavy? If you are a mouse, yes, but if you are a normal human being, the LP-E6s are small and lightweight.
c) Your process of swapping out both batteries and CF cards seems like a unneeded process and a risky one at that. The more you swap out cards, the higher the risk of corruption or damage to the cards. My process is that I buy a card large enough for most events, and then I put two cards in, the camera can switch between them as needed, cards never come out. In any case, your process bears nothing in these discussions around camera capabilities, that is mutually exclusive to the discussion at hand.
I just did a 9 hour photographic stint this past weekend. I put a spare battery in each of my cargo pockets. I never noticed them, they didn't cause any undue stress, and I was able to shoot nearly 2000 shots through the day, and during down times, I culled in-camera down to about 900 shots. All that viewing, AF, bursts, pushing lens AF on a 100-400, etc with no issues on battery needs. 
Given your numbers above, I would have needed something like 6 or 7 batteries and I was far from that. Also you somehow missed my point that image resolutions have very little to do with battery life, not sure how you centered on my comment about the EVF. EVF is a battery hog, not the 100Mpx image itself short of how much more processing there is depending on your picture style and NR settings in camera. Go with a neutral picture style and disable NR settings and the file won't have to be processed as much in-camera.
Processors also are better every generation so if there is a new Digic processor, you can be sure it will be 1) more efficient and 2) much more powerful than the older processors.
Let's put it this way, if the R1 were to indeed be a 100Mpx camera, you might need 1 new battery at $70. You however may need to buy several larger cards, and that is a much larger expense.


