It should've been marketed like the 5Dll was, emphasis on STILLS CAMERA-- "Meet the R5, your mirrorless 5D, it has IBIS, EyeAF, Animal Face Detect and more........ (it'll even shoot some pretty decent video, if needs must)."
The 5Dll was a dogs bollock for video work, it was a nightmare. A whole cinematography ecosystem sprung up around it, Zacuto innovated their Z-Finders and all sorts of rigs for it. BUT EVERYONE was thrilled with the 5Dll, as it was never sold as the filmmakers be all end all.
It's all in the marketing approach, Canon under promised, and the camera over delivered with the 5Dll.
I think the CANON R5 is fine, just miss marketed. WHERE ARE THE STILL PHOTOGRAPHERS ACCOUNTS CANON. DOES THIS THING SHOOT FAST AND RESPONSIVELY IN STILLS MODE?
Wouldn't it have been a different story IF we'd have woken up to a barrage of YouTube adds featuring WORLD CLASS STILLS SHOOTERS all singing the R5's praises for being a MASSIVE upgrade over their technologically aging 5D's. "This thing's BRILLIANT, I can actually nail the eyes, EVERY TIME with the old EF 50/1.2, and that lens was a nightmare to focus off the ground glass accurately.............."
We could go on and on here.