There are other good ergo keyboards as well, but Kinesis have been excellent for me and durable over a couple decades.
I was using the wrist wrest the wrong way, however, just about everyone marketing wrist rests shows them used the wrong way, so it's a bit more than just "user error" at play here.
As the article goes into, the best way to type is with hands hovering over the keyboard. I accomplish this by using a chair with high adjustable arm rests. If the arm rests can pivot inwards like on the Herman Miller Mirra, then a standard keyboard will do. If the chair's arm rests are only height adjustable, then I use a split ergonomic keyboard. Either way, my hands are kept floating above the keyboard.
If I did still use a wrist rest, I would have it spaced far enough away from the keyboard such that it would effectively be a forearm rest. Doing so would use up more desk space than I'd be comfortable with, hence why I skip wrist rests entirely.
Every time someone shops for standing desks, I mention my floor desk setup. A floor desk with height and tilt action(plus some peripherals) is a fraction of the cost of a regular desk and chair, and lets me change posture frequently. If I need more surfaces or a mix of angled and flat, I can fit in a second desk. Unless ceremonial reasons or a dirty floor require you to be in a more elevated pose, it is the superior.
Yet every time, they invent a reason to not want it. After all, they aren't there to solve their aching back, they are buying a standing desk.
What helped me a lot was 1. learning touch typing (a lot less strain on fingers & wrist), 2. using vim shortcuts which leads to less mouse usage (I'm just a basic user using basic shortcuts but even then it's noticeable) 3. exercising multiple times a week.
I sit in front of computers (much) more than the average person, yet I have never had any complaints at all. Whenever something feels tense I adjust. And this is not just about the hands, it is about the eyes, how you sit etc.
Many people make the mistake of following some ergonomic advice and not listening to their body. Just because one specific pose is recommended does not mean you should force your body into it for hours. Quite the opposite, you should probably find multiple good poses and cycle through them, and stand up or look at far away things once in a while. You should be able to feel where you have the tensions while you are doing it and do the countermotions that help you stretch the muscles that need stretching etc.
How do people do it? I see people doing stuff like this all the time too. Than complaining about aches and pains in their bodies. Its mind-boggling to me.