Not understand why people buy this monitor ? (can't play full screen, not right format for movie without distortion, not good for the neck)
1440px heigth is just low actually and it's a way too wide. You need to turn head for look from right to left.
A 21:9 monitor of 3840x1600 or even 3440x1440 is a way better. Can be used without turn head and have a better heigth or same but more ergonomics. 16:9 should never exist for computer purpose and not understand this format. May be for monitoring screen.
And you can view your monitor without turn head ? Our eyes have a limited angle of view if you need to turn head it's useless. Extended field of view is created by brain only and it's not "clear". (can't read a text on this field)
Because two 27" screens side by side will have an annoying bar in the middle. Personally I think currently 1440p for a screen of this height is a sweetspot until 2160p becomes affordable. Also regarding your concernes about the ergonomics, I would say you're better off with a 32:9 wide screen than a 16:9 screen as youre "forced" to move your head rather than sitting without a movement for a long period of time.
Two 23'' it's already too wide even borderless so can't imagine 27''. 2160p (4k) is just not readeable. If you want read 4k text you need something like a 40'' (16/9 = TV) and just not adapted to a desk. The future is 21/9 with 34''/38'' not another size. 3440/1440 or 3840/1600 monitor wide is really good not need to turn head (ergonomics) and dpi is small but readable. Just not understand why people spend so much money for a monitor like that think about your neck.