How did you make the leap from: "Seems like they took cues from smart phones…" to:
I eats my spinach, is all.
Smartphone users enjoy having an adequate camera on a device they have with them all the time. To think having a FF camera body with controls similar to a smartphone would overcome the size issues, and to sacrifice excellent ergonomics developed over several decades just to appeal to smartphone fans, is seeing the problem through a badly distorted lens.
I don't need to drive a car that has a touch-pad instead of a steering wheel to know I prefer a steering wheel. We don't have to try EVERYTHING to know we wouldn't like it. Take tetanus, for another example.
Certainly the R appears to be usable and will take great photos. But it also has some head-scratching ergonomics.
As for the ef 24-70mm f/4L IS, to me it seemed like an answer to a question few photographers had asked. Certainly IS would be welcome on an f/2.8 version, but f/4 is just a stop too slow for flexible event use, and 70mm just too short for a well-rounded portrait or travel lens.