Probably a generational thing
Linus Torvalds is now 55. I am now in my mid-60s. I want my keyboard, mouse and screen to suit me, and I guess Linus feels the same way.
So ... I use a large-screen iMac (27-inch screen + 24-inch second screen), not a fiddly phone [and I preach hellfire and damnation for everyone who claims that their product "works better on the app" ... which has variants only for Android or iPhone].
And I use a full-size "clicky" keyboard. Not the pathetic excuse which turns up on a phone screen. I want it big enough for my hands, and I want the physical feedback. Incidentally, my typing style is ... weird. I frequently type one-handed, and a caretaker who was doing the rounds of the building at one of my previous employers commented - correctly - that I play the piano. I have a piano with weighted keys and a proper action ... not a touchscreen. A pattern emerges.