That's total bunk.What makes a good image?
10% camera body
I'm sure these will all be great bodies. Don't sweat it too much if the specific model you want isn't in the pipeline.
It depends HUGELY on what your subjects are. I like to make fun of people saying things like, "a good photographer can make good pictures with a cell phone camera", without specifying the types of subjects to be photographed. Deep sky astrophotography? Airshow photography? Don't think so. Modest focal length pictures in good light? No problem.
See the issue here?