Sad, but inevitable, after Nikon stopped dragging its feet. I used Oly cameras for a few years, mostly due to their compact size and excellent in-body stabilization. But then Nikon released Z6 and I switched to that. Not much larger, much better image quality (Sony looks too "blue" for me), great usability, great stabilization, great glass so far. Still Olympus OM-D series were excellent cameras.
You can just use f/4 most of the time. 24-70 Nikon f/4 is not that different in size or weight compared to 12-40 f/2.8 Oly. Image quality is still going to be better.
