Do you think every part of your spending is rational?

And there will be the unlucky (stupid) person that ends up with RSI at 35

There is no evidence for a causal relationship between keyboard usage and RSI.

Poor keyboards and mice are exacerbating factor - my pinkie finger started to hurt when I was using a apple magic mouse.

I switched to an old PS2 Microsoft mouse and it went away.

It's more common among computer users, isn't it? Though that alone isn't enough to define a cure.

It's not even correlated with keyboard usage, so no not more common.

It's funny that most of these super hyped up mechanical keyboards still use traditional staggered non-split layout that will still contribute to developing RSI sooner or later.

I feel bad for the shoulders and hands of all those geeks using their tiny $600 cramped keyboards.

Any keyboard that does not separate into two independent halves (like ErgoDox or Matias ErgoPro) is horrible for posture and ergonomics.

https://shop.keyboard.io/products/model-01-keyboard is my keyboard of choice for most tasks, and certainly for typing. It's both split and ortholinear. It uses Mathias Quiet Click switches and custom-formed keycaps for the design.