The guy claims he uses the keyboard by hunching over the side table[1]. That is so comically anti-ergonomic (most people would get back pain within an hour or two, and be bedridden within a couple of days) that I think this is fake and posted on Reddit for karma/trolling purposes.

Consider also that to focus on another window requires the user to substantially turn his head. This would very quickly cause neck strain.

Our inclination is to believe things are real, but people do just go on the internet and lie. A lot.

[1] https://old.reddit.com/r/battlestations/comments/toecyt/dual...