Isn't the monitor WAY too low in the "ergonomic" picture? Like yea, your view should be comfortably a bit below your eye level, but that's notebook level low. That's some hunched back action right there.
Edit: Maybe it's fine because it's far away? No clue, just looks hella uncomfortable.
All the advice I read suggested that if you hold your arm out in front of you while seated in your usual desk position, your fingertips should touch the centre of the monitor.
The bottom image is missing the pests specific to your region, hovering over the person's head, driving it mad. Here in southern Quebec it's deer flies. Apparently in Scotland it's midges.
I love to go camping on my bike or go kayaking as much as I can. But this year so far has been horrible for me. I have never had so many deer flies chasing me and biting my shoulders while cycling through wooded areas. I have to hurry to pitch my tent and then hide in it for much of the trip, then hurry to take it down while being attacked by a horde or mosquitoes and deer flies.