If you're having those issues, please address the underlying problem instead of thinking that having the perfect ergonomic setup will fix your body. Getting up from the desk each day and getting some physical activity in will help your body a lot more in the long run.
Your attitude is quite unpleasant, teetering on the edge of ableism. Some people (myself included) are just very sensitive to RSI. I get up and about plenty, but without my ergodox keyboard and mx ergo I'm in a world of pain after a regular workday.
If you heard me say this in person I'm sure that you'd hear in the tone of my voice that I'm more coming from a place of concern than anything. I understand that what I said landed wrong though. Sorry. I'm just trying to say to other people what I wish I heard from someone years ago when I was having the same issues.
Working with a computer is the underlying problem here. If a special mouse reduces tension, nothing wrong with that. Also you cannot know how often and intensely the parent poster exercises already.
True. I am speaking from my own experience of having a lot of pain at the desk at one point in my life. After I started exercising regularly I have had zero problems for years.