Upon further experimentation, this seems to be by design. I shoot using back button autofocus, and sometimes after I've achieved focus I press the shutter without having autofocus continuously locked on. In those cases, the camera doesn't know what I was focusing on, and it doesn't seem to revert to the last autofocus point used, so it zooms straight into the top left corner.
Canon released a new version of Camera Connect (3.2.11.34) for Android this evening that adds support for the R5 MKII (and/or enabled something on the server side). I couldn't get the camera to successfully connect to my phone via Bluetooth even though both devices could see one another, but maybe that's because my phone is a somewhat older Pixel 5. I managed to connect via Wi-Fi, but the connection was not great, there aren't a ton of useful features, and the camera appeared to get a bit bogged down trying to constantly connect/reconnect—menus loaded slowly or not at all while the connection was being established or reconnected. I'm not desperate for these features and I don't feel like draining more from the battery, so I've disabled all networking and connections for now.
But the MP difference is not negligible (I'm not sure what you mean by 'real world shooting') and the DR difference is not identical either because the A7RV doesn't apply noise reduction. Also it produces less hot pixels.
Photography is about both lenses and sensors. But speaking of lenses, you can use a wider range of 3rd party lenses on an A7RV, including old EF lenses.
I don't believe in 'colour science'. The perception is very subjective. In terms of Landscape shooting, both Sony and Canon colours work for me.
There are downsides of course, including costs of the upgrade and ergonomics. But feature-wise and spec-wise, the A7RV is a better camera for landscape. It's still not that much better to make me upgrade right now but I'll refrain from buying new RF lenses for now.
