Yes. Although it doesn't feel like it when holding them. I currently own both the R5 and 5d IV. Both cameras are absolute workhorses. They've both been dropped, slung, submerged in salt water(really) and have taken it all. I've used the R5 in weather...
I've owned both of these cameras in the past and put over 100k on each. I originally bought the 6D II purely because I was mostly doing landscape photography and the flip screen seemed essential. About a year later I picked up a 5D III as a second ca...