This is probably what you mean, but I wasn't sure and then did the math: and if you take two 3:4s and put them side by side (as is being contemplated with 16:9 being split into two 8:9 panels) you get 6:4 aka 3:2 (so, this monitor).

Frankly, though, while I probably agree for "reading", with my "coding" I'm very happy taking 16:10 (which is a pretty standard monitor size and I want to say is much more common than 16:9, at least on laptops) and splitting it into two 8:10s (which is itself a pretty familiar aspect ratio).