Possibly to different body parts too. When I was cooking professionally I used to get it in my shoulder and elbow from certain motions. When I switched to coding I was aware of it being a common problem and figured I'd get it from computer user but I never have.

I have maybe been a little more mindful of my posture and ergonomics, but never to the point of using anything but a normal laptop or basic apple keyboard and trackpad.

I would not be surprised. A few years ago I developed disabling inflammation in my wrist, which turned out to be caused by my tendons having grown in an abnormal configuration. A simple surgery that "released" the collar of the sheath holding the tendons provided relief.

My surgeon told me that some segment of the population has the same issue and that they are simply born with it, but he is not sure what percentage it is, and some may go a lifetime without ever knowing.