The RF 24-105 f/4.0 is so much better than the EF versions, but I still am not happy with the sharpness in the corners, It's darn good in the center.
I am getting a RF 24-70 f/2.8 which I understand is dramatically better, and will keep the 24-105 as a walkabout.
I've been impressed with the 24-105, and your shot explains why. I've also cropped and blown-up small sections to test the lens performance and have been pleasantly surprised with the results. If the image doesn't look good it's clearly me and not the equipment.