The architecture, button configuration (e.g. dial and joystick), of 7D and 7Dii is the same. I shot on 7D (along w/ 5Dii) for nearly 10yrs, and just last month bought 7Dii, and there are significant changes but the physial layout is nearly identical (e.g. 7Dii has the additional programmable button next to grip).
You can make other argument like "examining the output" that the crop sensor is horrible in many lower lighting scenario above 800iso. I'm not a pixel peeper, I'm arguing about the ergonomics or the physical layout. And there's a reason why the R5 looks like a 5D (e.g. wheel and joystick) than the Rebel line.
I've said this before the R5 even rumored w/ specs, and it was unpopular, that EOS R and RP are more like Rebel line than 1D predigree. That wheel and joystick is an strong physical attribute that what makes a Canon camera a pro camera.
Again, I'm not arguing about the software, just primarily about the hardware.