That's all well and good but there are those that can't afford/justify the cost of a full upgrade. The 3d is great for those on older Zen chips as will be a drop in upgrade. And may give them spare cash to upgrade to next gen GC as well.
That's the only good case for this, although debatable whether a 5900X would be better idea or not. Slightly worse for gaming, although negligible at higher resolutions, but better for longevity and productivity.