I’m sticking to my Olympus and P1000 but I did eye up the 600 and 800 rf lens but a fixed f11 aperture and push pull focus ( or that’s how it looks as not actually handled one yet ) put me off as I’d nearly always be 6400-12800 iso and forever cleaning the sensor.
Yes I just assumed good software post processing was used as there’s a lot of poor quality images been shown from them as well
I had the chance to get a Panasonic G100 really cheap but the Panasonic 100-400mm was just too pricey that I skip the camera. I too think the RF mount is a better buy but in terms of lens cost. If money was no object I'd probably go with the G100 and 100-400mm set up mainly due to size.