https://www.justinmklam.com/posts/2026/02/beginners-guide-sp...
I don't know if it's just me, but I don't use the keyboard like that. I know the illustration is said to be exaggerated, but still. There is no need to squeeze your hands in front of the keyboard. Just naturally bring your hands in front of chest, the same as when you are reading a book or writing notes with a pen. No twisted wrists. No ulnar deviation. The idea that you can't do something with your hand in front of the center of your chest without hurting the wrists seem like a strange supposition.
Admittedly, I've never looked at a significant number of people typing on a non-split keyboard, so I don't have the data to refute the need of this invention. I just feel like the natural posture already doesn't have the problem of ulnar deviation.